4 Channel Amp Install Tips - Front To Rear Jump

Try this trick to get the job done ALOT quicker and save alot on your wire usage too!

[@jonahnalohakepa785]

I ran this setup a couple months ago and worked perfectly fine. Sometimes when you use your brains it all works out. Can’t be lazy with or without the money, good video.

[@thelastonehere8406]

Did you use 1 harness or 2

[@mycell1982]

Did anyone else not understand any of this?

[@frankfarrester9178]

mycell1982 I did what you your doing is connecting your wiring harness wires together front left to rear left the front right to rear right so when you take you wires that are in your trunk factory rear speaker wires and connect them to your amp you are making them the run for your front speakers so you don't have to run a new set to the front and you will plugs these into the front channel on the amp then you can use brand new wire and save time and money and just run 2 new wires to your rear speakers

[@nexus7tablet610]

You still have to run new rca or high level outs from the head unit to the amp, but you don't have to mess around rewiring the front doors which usually run behind the dash and are tapped up with the main loom.

[@prawny12009]

excellent way to make an easily reversible custom sound install, so long as you keep the rear speaker plugs intact and don't destroy the head unit plug on the car side you can just un bridge the wires and plug everything back in.

[@williamcrazylacyfurmage9953]

@@frankfarrester9178 You're saying to use the old rear wires and make them the for the front speakers, BUT then still run a set of new wires for the rear?

[@davidirving8212]

Frank Farrester now am i supposed to connect the (R+) F to (R+) R leads together from the factory harness over to the after market wires? Or am I connecting (R)F to (R) R both on factory side of harness

[@raynoranthony]

Damn... I've been installing for years... Didn't think about doing this...

[@thebaycuddy]

OHHH ok so I'm just using new rear wires for rear and stock rear wires to the front

[@Lesscoelectronics]

YES! that matters cause if you tune the front and rear differently at the amp and also in the radio the sound will be all messed up. They should be correct, Not to mention your fader and balance will be all wacky. Take the time and get them straightened out.

[@suspensefulness]

is this a 2 channel radio diagram

[@prawny12009]

you could really explain this a little better, people don't seem to grasp initially that the head unit is being completely disconnected from the original car loom, new head unit outs (front+rear) need to be wired to the amp (either rca or head unit speaker outs), then you run a new feed to the rear speakers directly from the amps rear outputs, you then connect the amps front channel outputs to the factory rear speaker wires turning them into outputs those get bridged to the factory front wires behind the head unit by looping them together f/l to /rl + f/r to r/r. you could make a plug or adaptor loom to do the jumper job rather than cutting the factory wires so that the original sound system can be easily reconnected by just disconnecting the amps wiring from the head unit and plugging the original speaker loom back in to the head unit.

[@anthonyfigueroa3746]

So for the output from factory to input to amp, do I use a 4 channel LOC and wire them individually? Or 2 channel LOC and wire them how he did in video and just use a low input connecter(RCA) y splitter to the amp input ?

[@gotti8467]

#2

[@Ye4rZero]

Clever cheat, maybe a diagram would help some ppl. Thx for posting, saved me an extra job

[@skyland3854]

THIS SMART GUY MAKES ALLOT GOOD VIDEOS THANK U BRO !!

[@az4life09]

so u have to cut into the factory side u cant do this on the mew harness? yhats the only thing confusong to me

[@thebuzzcjc]

I LOVE that I found this video, brings back memories. I installed backyard for a couple of years for a few buddies before I went pro in '99-ish, which was a whole other world with the enormous variety of cars and equipment, The head installer trained me and is my best friend to this day. My start day we had an Acura Integra he needed me to build a sub box for and we did speakers and the whole 9 yards. Anyway, THE POINT IS THIS is exactly the first trick he showed me (looping F + R w/ 4chan).thx

[@fredleeman8186]

Great content thank you

[@Lesscoelectronics]

you should be using a 4 channel on 4 speakers and a seperate 2/1 channel for your sub. 1 channel per speaker

[@AntoineFinch]

THANKS A MILLION!!!!!!!!!!!!!!!!!!!! Solved my question on how to get my front and rear speakers hooked up to the amp and my subs,have to keep watching to make sure I got it right.

[@ChristianGarcia-in6qj]

aye how did you figure it out I followed him and did everything right and nothing no sound

[@justinmcintosh2330]

THIS IS STUPID AND IS NOT HOW YOU SHOULD DO THIS...... When you adjust your EQ from your Stereo head unit it changes the rear and front speaker settings differently but not if you wire your stereo this way.

[@johnargue2977]

i have 2002 honda accord. speakers on rear deck. i installed my amp like in the video. good video. i have 1000 watts to 4 speakers, factory speakers handling it so far, lol.

[@jermzmoney5811]

what if your car has a factory amp can you still do that

[@ANDREIBORDEIANUFIT]

Hi! With this method i can connect front & rear speakers in series on a single chanell, to have a 8 ohms impedance and 4ohms at each speaker? Thanks

[@AJ-gs5jk]

Dude to you its like whatever. But to me your a radio installation God. Thank you.

[@lurice0]

draw me a picture

[@robertwalton6985]

Can you replace factory stereo and add small 4 channel amp without replacing factory wiring to speakers. I was told as long as you go from factory wiring harness to amp it is possible. Please advise

[@stephanielandry4715]

uhhhh that's genius! not like "rocket surgery" genius but ghetto fabrication genius!! Thank you for saving me time on my install.

[@Lesscoelectronics]

sure, however this vid shows you how to save yourself from the labor of running rear speaker cables...

[@lowhertzhighspl]

you mean front, not rear

[@Lesscoelectronics]

sounds ok to me

[@Lesscoelectronics]

HUH? I dont understand. The whole car's a ground. LOL. Can you explain what you're trying to do a little more?

[@nexus7tablet610]

I think I understand the purpose of cutting the oem output wires completely from the head unit, basically the original front and rear loom becomes one big loop for front speaker to amp connection. By linking the rear to the front, you just extend the front speaker wiring to the rear where your amp is by turning the oem rear outputs into front inputs. And saves dismantling the front doors/ dash and kick panels etc. I see this working great for vehicles with two doors where the rear speakers are accessible but four door cars are still going to need some splicing under trim panels and carpets. You could make a bridge plug for the car side of the oem loom to do this in a reversible way rather than cutting the original plug off. Your idea saves a lot of time and effort running new wires though, doing it properly would mean unwrapping the loom, removing the oem wires, running new wire and tapping it all back up.

[@Dominancelogistics]

Wtf? The first thing you learn. White gray FRONT. green purple REAR.

[@thebaycuddy]

Wow thanks for the fast response!! Il go and take a look ASAP!

[@thebuzzcjc]

Plz see my above statement. Toyotas And Hondas are GREAT cars, it'd just that it's almost a joke at how easy it is to run wires through them, I am sure he was misinterpreted and is not slagging on the cars themselves. :)

[@thebuzzcjc]

Dude cool it. He wasn't talking about YOUR CAR. He was referencing the fact that they are ridiculously easy to run wires through, not saying your car is a piece of shit.. Jeeez.

[@clem-1917]

Yo, at first i thought you just combined the two channels, but actually no you keep both channels independent. That is pretty smart savings right there.

[@suspensefulness]

why am i lost

[@raqpina8895]

Thank you (46 year old man wondering wtf am i 19 again or just wishing)

[@rockfordhx2768]

Lol this was like 2012 when copper was crazy high forsure

[@ChristianGarcia-in6qj]

+lessco electronics I just did your wire setup in my car connected the rear speakers to the rear output of my car. I connected the positive terminal and negative of both rear input that are "dangling down" and connected it to my front output to my amp. now everything is hooked up to my amp. my car has the same exact color wires and location as you showed in your video I connected the grey front right and purple rear right positive together and negative. the left side I connected the white positive with the green and same with the negative .. I use to have a sub so my power and ground are good but when I turn the car over my amp shows I messed up somewhere since I don't get sound. did I do something wrong can you get into detail exactly what you did? what about the rca i have a 4 channel heafunit do i put the rear ro the rear and front to the front? I followed you and nothing. help!!!

[@wheelnphonewhore]

I couldn't post the link here, so I sent you a message..thanks in advance!!

[@carlitot5388]

Isn’t speed wire the best way now? One cord with all the wires inside

[@Lesscoelectronics]

you can plug in an aftermarket metra harness adapter and tie the fronts to the rears without cutting anything at all

[@tonydize3944]

Thats not a trick if someone don't know this they don't belong near audio

[@Lesscoelectronics]

True, but chrysler dont make any lawnmowers either

[@milldabeast519]

fuckn 5 mins into the video and ive gotten nowhere

[@robertlopez4904]

"Those cars are like a joke anyway" 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@tommymadux3646]

But if your replacing the radio you still need to run rca wires.

[@paulmahoe3445]

What if I tapped into the wire harness behind the deck and crimped each speaker wire fronts and rears to a 9wire and ran the 9wire to the back. Should be go to go right?

[@Lesscoelectronics]

uh huh

[@freddiegarza1339]

Where do I connect my wires from the doors speakers to. After I wire the wires coming from my stereo like that. Thank you so much. PLEASE HELP. Because I have no sound after I did that trick myself. All I have is four sets of speaker wires hanging there. So I guess my question is where do I connect those wires to l. So I have sound coming from my door speakers.

[@Lesscoelectronics]

whats the year make and model?

[@freddiegarza1339]

@@Lesscoelectronics 2001 acura tl so how do I hook up the four door speakers. With front to rear jump.

[@Lesscoelectronics]

Thats a winner, I have no bad things to say about it

[@Gun_powder_therapy]

my Kenwood kvt 514 head unit cuts off when I play to loud after maybe 10 mins. (everything is tight and secure and connected good) the amp on the radio is really hot when it does that. I can do this (with a loc) and use a 2 channel amp to solve that problem. am I right. let me know if I'm wrong and please give advice to fix this issue. my car is a 98 town car

[@Lesscoelectronics]

They are, but in a wiring way, dont get so excited man. its just a car after all.

[@shallowtito2902]

What he's saying is simple for the people who don't understand its this... Your two rear speakers in the back of the car are connected to the cars factory wires... What you do is disconnect the rear speaker wires , so now let's use the left speaker for example. The left speaker side now has four wires loose, you have the (+) and (-) wires hanging from your speaker, and a positive and negative wire that were connected to your speakers (depending on if you either cut the factory clip off or have the female connector.... It took me a while to figure out, but then I realized when I connected my new rear speakers, I had to splice four wires on each speaker, making a total of eight wires in the rear...

[@denniswanjau109]

This is not directly related,but I have a question that needs clarification,,any help will be appreciated. I have a pioneer 6500f(4 channel,60*4wrms @ 4 ohms)amplifier,and also a pioneer 310d4(400wrms,dual 4 ohms)woofer. I want to get the most power out of it,is it safe to bridge each voice coil as it is 4 ohms stable when brigded(the amp) inorder to get 360wrms,as the amp is 180wrms*2@ 4 ohms,when you bridge 2 channels,,so it safe to bridge all 4 channels using a 4 ohm dual voice coil sub?

[@rafaelroman5649]

What do you recommend in my situation, I have a stereo with 1 rca output I want to hook up a epicenter with 2 amps 1 for sub and a 4 channel. How would I wire up my rca cables? I was thinking to hook up the rca from the stereo to the epicenter then epicenter to sub amp input like normal. Then rca from sub amp output to 4 channel input?

[@ABONE1]

What subs and amps? How did it work out for you?

[@rafaelroman5649]

@@ABONE1 I just bought a receiver with three rca outputs

[@suspensefulness]

my radio is only a 2 channel so i loose my fader function

[@vietcong4u]

great tip but ,,, what about the rca cable?

[@keenanhigh]

So when you are connecting the factory harness and the head unit harness how do you wire the two together?

[@B2lazy]

what about the yukon's suburban's etc where the rear doors going to the factory amp. factory amp blown so you need to run the speakers themselves to the amp

[@shanemiller4108]

Mr Lazy yeah that's what I'm saying I have a Buick park ave and it has a factory amp so do I just say fuck it and wire all my new speaker's to my new amp

[@angelavondrasek6842]

When I wire the wires on my harness together do I add the car harness specker wires as well? Or is it now going thru rca ?

[@Lesscoelectronics]

no rca's at all here my friend... youre tying the fronts and rears behind the radio so its a short run from the amp in the trunk to grab the fronts (where the backs used to be) then run new rears and wala... dodne!

[@B1J0D]

Hondas and Toyotas are a joke? And you buy a Chrysler? lol

[@robdabender7330]

This aint it guys. Spend that extra $19.99 for a roll of speaker wire and run your pairs the correct way. Each channel on the amp is for each individual speaker. And also, what about impedance? 🤔

[@robertotrimarchi3519]

VERY GOOD INFORMATION, THANKS

[@frankiesaechao9506]

How can I DM you i got questions for you.

[@willbarnz6960]

Not very clear. Video is quite poor too. Interesting deal... Yeah the jump can work... Basically this guy is using the existing rear speaker wires to bring the speaker signal back to the front (hooking the amp out to where the speakers would normally have connected.) Where it would normally connect back into the head unit is instead tied to the front speakers lines and used to power the front speakers. The only thing that is left unsaid is how you're getting the signals to the new amp AND Don't connect the head unit to speaker wires. And... that is where the danger lies. You just used all your existing stock speaker wires to do this jump. DO NOT connect the head unit's speaker outs or line outs, the RCA jacks if you got them for that matter, or you'll let the magic smoke out of the new amp and/or your head unit. Run new speaker wires to the amp from your head unit, if you don't have the line outs (or the amp doesn't have line in jacks.) Run RCA cables (shielded) from the head unit to the new amp if you do have line outs on the head unit and line in on the amp... but whatever you do, DO NOT tie in another connection that isn't speakers to the old wiring doing this trick.

[@93Akkord]

Is it possible to run 4 speakers parallel and 1 sub with this trick on one 4 channel Amp? Sorry, I'm new to this and I'm trying to avoid having to run as much wire as possible. Thanks!

[@Lesscoelectronics]

you could, however it wont be optimal. Id add a mono amp to the sub abd use the proper low pass filter on it, and get independant control over the whole system, not just 1/2

[@93Akkord]

Thanks for the response! Really appreciate it.

[@mohdfadli6501]

93Akkord

[@Nastynatenate]

im not sure if the cheat would work for me because im using speaker input and no rca. so my rear outputs from the head unit would need to go to the speaker level input on the amp.

[@jumpman5921]

Hey just wondering if u could give me some tips I have a Kenwood KAC-M1804 400W amp and hooked it up but sends my head unit to protect mode any ideas of y it might be?

[@Lesscoelectronics]

Its all done right behind the stereo

[@stormnks23]

I wish I would have known this like 2 years ago

[@Worm5555]

Hello, I'm still looking for an answer to my question. I want to add a component system to my 2003 Ford Crown Victoria, and I would like to power them with a 4 chabnel memphis amp. Is it ok for me to connect my tweeter, to my door speakers? What would be the easiest course?

[@Lesscoelectronics]

You can still do this, take the audio out from the stock radio for the converters, split them as needed for your 6 channels of rca's and run the amps outputs to the car side speaker wires and youre good

[@Lesscoelectronics]

The pac interfae usually does all the work digitally for you, I am assuming you have a later model GM? I only recommend using this if youre not utulizing any factory amp. (or just plain old bypassing it).

[@cornsmooth1274]

So my question is... If u have a sub amp already installed... But adding another amp to your door speakers...u don't have to run speaker wire to your 4 channel amp...u just change it in the back of radio... Is that correct

[@yahaira5411]

Hey I have an 03 Lincoln ls with navigation ran the wires to all doors got power to the amp but it wouldn't make a sound I'm using a hi/lo impedance adapter which I wired from the left rear speaker any suggestions on what could possibly be wrong

[@BigBurrito818]

Great idea for newbies, but instead of talking so much , put a chart up, get to the point much quicker, keep your Honda comments to a minimal...awesome idea and for posting a video about it... good job

[@scottgitsham6376]

great vid mate ....help ??? I have a rangerover that has a mono High level output for the rear stock sub woofer that I'm using for my amp spliced to 2 channel for my high level input on the amp my question is can I splice again to run into a 4 channel amplifier instead of just a 2 channel amp

[@skydrones2012]

First if you want a nice sound you need bigger wires. The factory wires are not rated 100watts rms . also i used soldering for wires job with shrink

[@mephistofelies]

dude, this makes sooooo much sense i almost feel stupid for not looking at the signal paths . wow, ive wasted some $$ and time.... Never again!!! Big thanks

[@ChristianGarcia-in6qj]

if anyone could help me I would appreciate it I don't want to do all the crossovers and extra wiring. at the end of the end of the day if I have to put everything back to factory and do the traditional way I would I wanted to try this first

[@eyefulevents4442]

Thank you 🤝 most definitely doing this today 😎

[@suspensefulness]

im lost ,this works on a 4 channel amp

[@tylers4163]

This is only for a very low power setup right? You would have all the amplifier power being pushed through 2 rather than equally through 4 to the front

[@paulmahoe3445]

I did that prior because I had the LC2i but found out afterwards that I got the wrong loc. So I ended up buying the aftermarket stereo.

[@user-ni7xd5fg7t]

I hate audio vocabulary a lot... Amp input output.... Its stupid. Dvc, svc,parralel, series, 4 ohms, 2 ohms. bridged, Line out converter. Ported, groundloops, 320 kbps, watts volts amps...... I hated learning this crap.

[@user-ni7xd5fg7t]

active or passive crossovers, 80 is bass 120 is highs or mids, gain vs volume, Rms power vs max power. I hate it.

[@loloduece0st]

How about if I want to switch the factory bose amp to a new 4 channel amp? Couldn't I just use the factory speaker wires already ran to the 4 door speakers? And just hook up power and ground and stuff as normal? (Hope that makes sence this has been a pain to get fixed and don't have $500 to spend on bypassing the factory amp.

[@loloduece0st]

That's what I was wondering. Thanks for the quick response. Could I also just use the remote wire they used for the factory amp to the new amp?

[@shanemiller4108]

dillon shepard how did u do it Mann I have all the stuff also

[@loloduece0st]

Amplifier Output » Premium w/o RSA Wire Function Colour Notes Fuse # Fuse Size Fuse Location iC 12V DC Battery Orange 11 20 amp Fuse block below left rear seat Remote Turn On (input) Pink Left Front Mid + Tan Door speaker Left Front Mid - Gray Door speaker Left Front Tweeter + Dark blue In-panel speaker Left Front Tweeter - Light blue In-panel speaker Right Front Mid + Light green Door speaker Right Front Mid - Dark green Door speaker Right Front Tweeter + Orange In-panel speaker Right Front Tweeter - Dark green In-panel speaker Left Rear Mid + Brown Left Rear Mid - Yellow Right Rear Mid + Dark blue Right Rear Mid - Light blue Amplifier Location Behind trim panel on left (XL) or right (except XL) side of cargo area

[@loloduece0st]

Shane Miller there's your layout for all the wires

[@GAR_DRAGO]

FUCKING GENIUS!!! 🤘🏼🤯

[@BIGGIEDEVIL]

this jump trick works and i do it in every install to save time and a little bit of money so you don't have to buy more wire nice vid but showing the way to do it is better than explaining it cuz some ppl have half a brain and need to see it to get it but good vid. BTW Honda and Toyota's are not a joke remember they didn't go bankrupt like Chrysler did

[@rickbaker3263]

Lessco Electronics, Quick question. The connector end of the wiring harness your showing..... does that plug in plug directly into the stereo or does the connector from the stereo plug into that harness? I guess I'm asking if you do the jump before you plug it into the factory harness?

[@prawny12009]

the stereo gets disconnected completely from the original car loom and instead you run wires from the head unit directly to the amplifier, this is the major info that is missing from the how to (you sort of figure it out as he goes along but yeah) this trick saves time rerouting wiring from the amp to the front speakers by recycling the original speaker loom turning it from front + rear out from the head unit into front out only from the amp. so you end up with power ground and remote to the amp as well as the new inputs (rca / high level from head unit) going to the amp and four shorter runs from the amp going to the original rear speaker location , two for rear two for front. it would be a little more involved if the car had four door speakers rather than front door and rear shelf speakers as you would then have to strip more or the carto get to the rear speaker wires and possibly have to run some slightly longer runs. the biggest benefit i can see besides labour and material saving is the possibility of making an easily reversible amp install that has the factory loom intact, all you do is wire up an adaptor plug rather than cutting the factory loom.

[@williamcrazylacyfurmage9953]

Kinda lost me there, If your rear speaker wires are going to the amp, then to the rear speakers. How is the front speaker getting fed??

[@horayforjoe]

how much power do you think is too much for factory speaker wire? I'm going to install a 4 channel amp and new speakers in my charger, so I'm thinking your 300 has the same wiring and you would have some good input. Thanks.

[@Lesscoelectronics]

horayforjoe I'd say appx 30w rms per channel give or take

[@horayforjoe]

Lessco Electronics Thank you. I also appreciate the quick reply.

[@vladimirlopez7840]

This is great I thought it would work for me but unfortunately it doesn't as I have a factory amp hidden in the car somewhere.

[@catch-n-release5596]

Smooth move !!! I get it!!!! I'm going to do this to night

[@CAPRICES4LYFE]

i noticed you mentioned base model would this work for bose,? 08 chev imp also what if i wanted to bridge the two fronts thumbs up btw

[@02bugeye]

Would a 4 Channel Amp work to power 4 door speakers, 2 tweeters, and 2 8" factory subs? if not what kind of Amp would i be looking for? My car model is a 2006 Volvo S80 and my battery is in the back of the car :)

[@prawny12009]

if you use three way cross overs and dual voice coil subs yeah, just run mids and tweets to your doors and left front and rear lows to one dvc sub and the right front and rear lows to the other dvc sub. front rear bias will still work on the doors but will make the dvc subs see different levels per voice coil. the other option is run higher impedence front and rear speakers in parrallel from the front channels and run two subs of normal impedance off the rear channels via low pass filters. for example if you have a 4 ohm amp you would use two 8 ohm two way component speaker sets for left front and another two for right front then use one 4 ohm sub off the left rear and one 4 ohm sub off the right rear. front rear - bias will then be doors - sub bias.

[@barrysanders5384]

With the wires"paired"like that is the fader function going to work?

[@Lesscoelectronics]

yes, you are grabbing the rear speakers up front using this tip, and running new fronts a short distance behind the dash, so wala, front and rear, left and right respectively

[@suspensefulness]

@@Lesscoelectronics 4 channel amp , speaker level connection wired

[@atreyustratula]

Awsome trick! Now I have the dedication to actually install a 4 channel!

[@jaya7144]

Lessco Electronics Will this trick work if I was to install a crossover for my mids and tweeters/highs? Or by doing this will eliminate me to install the crossover? I bought a set of components that came with the crossovers and tweeters and I want to install them, but I'm not sure if this trick will work or if I'm better off just running new speaker wires from the input of the crossover which is going to be on the front doors, all the way to the back/trunk where my amp is gonna be, eliminating using the factory wires. Sorry for all the questions, I would appreciate your advice.

[@Lesscoelectronics]

this isn't effective when youre adding crossovers.

[@Fifty-fx9qx]

quick question ,if i connect those wires behind the stereo what cable do i have to run to amp ? or can i run rcas and cut the end that does goes into the stereo and connect them to the speaker wires ?

[@StrainLover420]

quick question.. I have a 4 channel amp and i can bridge it to give it a total of 240rms watts on 2 channels my question is.. can i use one subwoofer and use the 2 channels of the same amp to give it a total of 480watts rms. meaning bridge it once... then on the other 'bridge' channel bridge it again to the same sub.

[@Lesscoelectronics]

if you bridge it youll have 2 channels to work with, you cant bridge it 2x if thats what youre asking me. (I hope Im understanding you!)

[@floridaboys13]

i still confuse ok so loop the FRONT with the REAR and he also say i the video connect the to REAR together ? can some one help me?

[@kewa-nh6ch]

Tricks of the trade, good tip bro!!

[@devindexter]

Fucking genius!

[@martinhensley1497]

So you are splicing the factory harness wires not the harness on the the radio adapter harness

[@l34music]

What's happening when you have a radio who has separate outputs for rear and front I don't want separate volumes for them. So if I use this method wouldn't I lose that?

[@protorageautosport]

i have i question i been look on youtube on how to connect multi component speakers to amp i'm installing mid and high speakers . 2 component to front and 2 component to the rear . i 'll not trying to get to much bass from components because i'll have subs in trunk i want a clear quality sound

[@davjhall]

Can sum1 please explain to me what the hell he just said!!? :/