Bose Amplifier working in Infiniti G35 w/Pioneer Z110BT and Metra 70-7551

[@linwoodsly7101]

Thank you ,purchased a Pioneer AVH 1400DVD for my 05 G35 ,and shall follow your blog to connect this weekend July 4 ,2020,

[@Wrathernaut]

@Kidoelement The 05+'s work fine this way, but 03-04s seem to need a different adapter - PAC ROEM-NIS - to work properly. If you want more help, come to the g35driver forums, I've got a fairly extensive post in the AV forums for what you need.

[@marcogag]

Use the metra 70-7550 and go high level into the bose amp if you want to get more jam out of the system. Be sure you turn the new decks beep tones off as this will cause the unit to play "hot", meaning "loud" and to hot to touch. You are right people the 70-7551 harness will cut output almost in half . The Scosche SC-4 with adjustable input gain control will help greatly !!

[@Wrathernaut]

The built-in EQ on the bose amp goes nuts on the signal whenever you send a high-level signal into it, and since it's an amp that is only designed to accept differential-balanced signals, you're already screwing it up with the low-level inputs. High-level inputs will cause it to interpret even more of the signal as noise. I recommend the PAC ROEM-NIS2 over the Scosche, as it's been used by my recommendation with extremely good results, but since they are equivalent, either is good.

[@Sulucion6Tone]

Had to use this harness today for my new install in my g35. i got it to work exactly as you have it, but could turn my stereo up all the way; it was decent but not loud. I then spliced them all into the head units wiring instead of rca's and the difference was amazing. Stereo is booming at 30% volume; will need a bigger ground and to maybe separate the amp ground from the head unit to clear up any low volume static.

[@Wrathernaut]

@dehart3a The point of the video was to show that the harness didn't change the audio at all from before. The Bose amp is what kills the sound.

[@Wrathernaut]

You'll have to take my word that the bass was unchanged from before, but it seems 03-04s have it worse for some reason. I did a full system upgrade including new amps, and just stopped at this point during the install to show that it was fine with only the 70-7551 harness. And if you thought anything Bose sounded "great" you need to hear what actual premium audio systems are supposed to sound like. But you can get it back to "normal" with a PAC ROEM-NIS2 in place of the 70-7551.

[@xfirechickenx2400]

I realize this is an old video, but I just went through the madness with this harness (Metra #70-7551) as I have a 2002 Infiniti I35 with the Bose system. Like the G35 it has the Bose amplifier and when I installed the new radio (one of the Pioneer AVIC model navigation units) the volume was extremely low and sound quality was horrible. (completely distorted) (Sorry if I'm annoying you with all the parentheses!! LOL!) I didn't read all the other comments, so please forgive me if my comments are redundant. Anyway, I called up Metra and was told that the RCA outputs on my Pioneer unit do not send enough voltage to the Infiniti's on board Bose amplifier, and that that's the reason for radio's the low volume and poor sound quality. I can't speak for all brand radios, but if you're aftermarket radio is exhibiting the same issues using the afore mentioned harness with the Bose amplifier pairing and it isn't a Pioneer, I'm thinking it's a pretty safe bet that the remedy I'm about to give you will work for you as well. The tech at Metra told me to clip off the RCA jacks on their harness (Metra #70-7551) and wire those leads to the Pioneer's actual speaker leads (you know, the separate +/- wires that all after market radios come with?) and that will fix the volume/sound quality issue. I did what the tech suggested and it totally worked!!! Full volume and ZERO distortion!! For all you wiring gurus out their, I don't want to get into a "doubling up of power amps" debate, I just know it worked (LOL!). I suppose an explanation of my last comment would be appropriate. I was always taught that you never wire two power amps in line, because the signal in the speaker channels those amps are responsible for would become too hot, and cause the signal coming out of the speakers to be distorted. Connecting the speaker leads from my Pioneer radio to the Bose amp would be doing that, because the amplifier in the Pioneer is utilized when using the speaker leads. Even though in this instance I doubled up two power amps, it did not cause the distortion that typically happens when wiring two amp in line. If you decide go the route of clipping off the RCA's on the Metra harness, just realize that the copper wire (without plastic surrounding it) on the outside of the cable's right and left sides are the negative wires. Another issue worth noting for the Infiniti/Bose amp installation is that the blue wire on the Metra #70-7551 that says "power antenna" is actually the wire for the Infiniti's "on board" antenna booster. It should be connected to the aftermarket radio's remote lead (usually blue). If it's not connected the radio reception will be poor.

[@Wrathernaut]

The problem isn't signal levels, it's signal type. The bose headunit and amplifier use a differential-balanced signal. Aftermarket headunits almost without exception, use an unbalanced signal. I'm not sure if it's just inconsistency in bose "quality" but sometimes, as in my install, it sounds fine with the low-level or speaker-level inputs. I can't speak for the i35, but the G35's antenna amplifier is POWERED by the wire from the radio. It is not triggering a relay. Aftermarket headunits do not provide enough amps to actually run the antenna amplifier, so FM reception is terrible if you try and run it from the radio's remote or power antenna lead. The way I've recommended it be wired, is to power the antenna amp with the same switched power wire that's powering the radio.

[@xfirechickenx2400]

Wrathernaut It's funny you should mention that the remote wire on an aftermarket unit isn't powerful enough to run the Infiniti's antenna amplifier. Today while driving, I noticed that the radio reception is better since I wired the blue wire from the Metra harness to the remote wire on the Pioneer unit, but it still isn't perfect. This weekend I will take your advice and wire it to the "switched" (which I believe is the red wire) wire. BTW, clipping the RCA's from the Metra harness and wiring them to the speaker leads on the Pioneer did fix my audio problem. In your mind, is there a better way to do it?

[@kimbro1588]

XfirechickenX I clipped my rcas off but I still had low sound....how did you do the wires?? Did you put both +/- wires to the RCA wire or did u jus add it to the ground or positive side only?? Thanks in advance

[@samkobe8]

second question, the white/blue line says connect to amp turn on on car vehicle, Can I tap it also to the power antenna wire solid blue line together since my car has a power antenna line too? Thank you for your help

[@steves313]

Hi I have a Nissan Fuga 2005 can I use this 2 for installing a aftermarket stereo

[@terryreyes1125]

Whats weird is you get sound in the rear speakers but not in the front with the bose speakers in a 2001 nissan pathfinder after bypassing rear amplifier 🤷‍♂️

[@ballin20003000]

is the wiring kit that I'm having problems with not the Dashkit

[@ballin20003000]

is there a diagram on how to install as far as the wiring because I tried I got no sound or power

[@TheTXbeard915]

shawn j same

[@jesusbecerra2463]

Where do i connect the blue/white amp turn on?

[@cubang10]

I've done what you did. Don't get the same power as I did before. Sounds clean with no hissing but not what Bose is supposed to sound like. Do you get very good quality?

[@samkobe8]

AVH-P8400BH dvd receiver. Hello I have a question about the harness of the pioneer, on the manual there is color coding to install the harness to my vehicle infiniti g35 sedan 04: orange/white it says next to it connect to lighting switch (what is that exactly, is that the same as Orange color wire illumination dimmer wire line to vehicle?) (my harness pac oem-1 has two wires, orange for illumination dimmer line, also has a orange/ white strip line, so i was confused to which I should connect to

[@cubang10]

I have a Eclipse avn726e double din. I have a hissing sound at low volume.

[@Singkhorn.S]

Is the volume level loud and clear because your head unit radio has at least 4-volt pre-out on the RCA jacks?

[@brettr1224]

It may have helped, but the Bose amplifier is very inconsistent with how it handles un-balanced audio as an input. Save the headache of a potential failed install and just get the ROEM-NIS2 linked in the description if you are going to keep the Bose amplifier. Even better if you get a new amplifier instead, because Bose sucks.

[@Wrathernaut]

@mrlojix Nissan Part 68260-7W010, fits perfectly with factory navigation units, but is hard to come by. The trim shown is Nissan Part number 68260-7W000. I cut the top 1/8" of plastic behind the aluminum off and folded the aluminum over, as I couldn't get the 7W010 in a timely manner.

[@Kidoelement]

hey so this means that i dont need to change anything else for it to work... and do u know if my stock nav will still work?

[@Wrathernaut]

@mrlojix You can see at about 0:41 that my first attempt to modify the 7W010 wasn't perfect, but nobody that I haven't pointed it out to has noticed, and I could do a much, much better job if I had to do it again.

[@PulloGorko]

Darn, I wanted to get an aftermarket Headunit installed (JVC KW-NT300) with rear-view camera on my 03 Camry. I was willing to pay $80 - $85 for installation, here they are trying to charge around $120 for installation (at your local Fry's Electronics/Best Buy).

[@mmotersykul]

Sir!!!!! Where do I plug the RCA's from the adapter into my deck? I have one set of RCA outputs (red and white) so would I need a splitter?!? Thanks!

[@mrlojix]

what dash kit is that?? how did you fit the nav unit?

[@Wrathernaut]

Nope, just a hobbyist. I do it for love, not money. But I'm physically about as far as you can possibly get from CA without leaving the planet right now. Even when I get back, I'll be on the other coast.

[@VQpwrdSER]

So by using this kit the white yellow green speaker wires will not be wired in? An I correct in assuming that?

[@Wrathernaut]

That's what worked for me, this time. Many others have failed using this method or with the speaker-level wires. As the updated description of this video states, you should use the PAC ROEM-NIS2 instead of the 70-7551 wiring harness for a much greater chance of being able to keep the bose amplifier. But even more recommended is to replace the bose amplifier, since it's terrible.

[@raul0685]

Yeah I hade the same problem with low noise I rewire it and got it working

[@Wrathernaut]

Glad it worked for you, it's a shame that Bose made them so inconsistent that this doesn't work for everyone, which is why I don't recommend trying unless you get the harness for free. The ROEM-NIS2 has a near-perfect record, and should be the primary method for this kind of install.

[@trishatripp9311]

So as for an 03 and a roem nis2, what would the radio have to have or can I just use any? Like 4rca, 4preamps? Or? Cause this metra harness isn't good and you seem to know alot about the PAC .

[@Wrathernaut]

The ROEM works best when connected to the speaker-level outputs in our cars. I do recommend attaching RCA cables long enough to reach trunk to the back of the new radio, and tucking those cables into the void under center console so that if you do add an aftermarket amplifier, you don't have to remove the radio again. Especially in the 03/04s - you risk damaging the clock trim, which is extremely brittle from the sun.

[@trishatripp9311]

@@Wrathernaut so any amount of volts/preamps or preouts? I have the factory sub and amp.

[@ValenNitto]

This all looks like a jumbled mess to me. Ordered a double din for my ser and did one previous install on my old car and was super easy. This looks a bit intimidating.

[@kimbro1588]

Im having that low output problem so what should I do my setup is the exact same

[@Wrathernaut]

Derek Kimbrough like the video description says: use the PAC ROEM-NIS2, not the simple wiring harness.

[@kimbro1588]

Wrathernaut I have a PAC Lp7-4 & I wired it up but I don't have sound

[@vqlove4036]

Do you happen to have a video or guide or anything on how to hook up your recommended PAC and not the trashy one everyone is having issues with?

[@Wrathernaut]

GoProAction Yes. g35driver.com/forums/audio-video-electronics/333847-wrathernaut-s-double-din-installation-faq-shopping-resource-list.html

[@vqlove4036]

Wrathernaut the head unit I got has the aux plug in ports, do I just cut the end off and solder the front and rear speakers to the PAC front and rear speakers?

[@Wrathernaut]

No, you connect the ROEM-NIS2 to the speaker-level outputs from the new headunit, not the line-level RCA outputs.

[@spcb3134]

Hi just a question...I am new to the Bose sound systems. I am trying to replace the Bose with an Alpine Head unit. the 70-7551 harness has 4 RCA cables. What do these attach to, the new HU only has 3 plug ins. I am reading about still using the Bose amplifier--how is this done? Please shed some light on this..Thank you

[@Wrathernaut]

From the description - don't use the 70-7551, use the PAC ROEM-NIS2 adapter instead. Connect it to the matching speaker-level output wires (not the RCAs) from the new headunit if you're keeping the bose amplifier.

[@spcb3134]

Wrathernaut Yes that looks like it might work better. Just for clarification, what do you mean "keep the bose amplifier" Wasnt that built into the stock HU?

[@brettr1224]

Steve P The non-bose unit has the amplifier built into the headunit, but the bose "premium" audio system uses an external amplifier that is mounted by the spare tire (coupe) or under the rear deck (sedan).

[@brianbreezyproductions]

Hey Wrathernaut! Thank you for enlightening us all with your videos. They have been a huge help for me getting my double din into my g35. I wanted to ask you about the metra axxess interface for the steering wheel. Did you have any errors as far as mapping the buttons? I've managed to get it connected but the buttons don't do what they are supposed to do. Even remapping doesn't help. Have you ran into this?

[@Wrathernaut]

I had no issues with the default mapping on a pioneer NEX series unit last time I used one, at least not once I figured out just how long (very) you need to hold the volume button. If it is issuing commands to the unit, but not the ones you want, the best way to handle it is to download the axxess app and reprogram it with a USB OTG cable. It's much simpler than reprogramming the axxess directly.

[@rrrrrafaell]

I tried everything possible to make sound louder from my Pioneer FH X700BT but I think your option is way better, one of my friends who helped me installing the Metra told me about the cable, he says is not good cuz the sound is loud but has distortion, is that true?

[@Wrathernaut]

+rrrrrafaell If the sound is garbage with the 70-7551, you definitely need the PAC ROEM-NIS2. I really only keep this video around to try and direct people to the fix if theirs doesn't work and they already made the mistake of using a 70-7551.

[@rrrrrafaell]

+Wrathernaut the sound is super low, like in volume 30 you can barely hear it and I used to have that same pioneer on my old Acura Cl. Like I said my friend has experience installing audio so he told me about the pac and he says is loud but distortions the sound so i don't know what to do.

[@rrrrrafaell]

That's my problem today night, sound is really low and I'm using the regular 70-7551 cables, any advice?

[@Wrathernaut]

just like the description says, use the PAC ROEM-NIS2. I only leave this video to show it's possible, if you're lucky, to have it work with just the harness.

[@rrrrrafaell]

+Wrathernaut appreciate it! I'll try to make it work with those cables first before trying the you say, thing is my buddy is doing it for me and he'll help me this weekend so we will see, thanks dude! Hope you still having your G by the way

[@1907squid]

You got it working?

[@sizzlethegod2673]

i installed my new head unit in a 2003 g35 with bose and ive got sound out of all 4 speakers rear and front but no base from the sub. How do ii get the sub working.

[@Wrathernaut]

If you're not using the PAC ROEM-NIS2 adapter, that's probably the reason.

[@tristen341]

Wrathernaut was the sub working when you used the 70-7551 harness? maybe ive got something messed up.

[@Wrathernaut]

Yes, but the bose systems are extremely inconsistent, so even with the 70-7551 harness, there's several significant issues that occur randomly. That's why the entire description of this video is telling you not to use the 70-7551.

[@brandohines1011]

do you know if I can piggy back off my oem harness while it's still plugged into my factory radio so I don't lose my climate controls im saving up for a double din and have the dreaded no sound from radio

[@brettr1224]

You'll be drawing more power than the system is designed for, but if you get power to the new radio, and cut and splice into the factory audio signal wires, it'll work, but you'll need to get creative in temporary placement of the new radio while the factory radio is installed.

[@brandohines1011]

+Brett R yea I was thinking about putting it in the little cubby hole in the center of the dash, thanks for the insight I'm gonna just piggy back the speaker inputs and draw the juice from the cig lighter maybe

[@moisesdiaz6552]

help.i connected everthingbuy my rear speakers dont sound

[@DeadAndGoneSD]

Moises Diaz same boat bro, my front speakers play but at a low volume even when radio id's turned up max. my rear speakers have no audio at all. would the pac roem nis2 solve that??

[@candynaw]

Where r u located i need help

[@Bear_83]

Will this work with the m37x I just want to put an aftermarket amp for sub an switch out sub in door with Hi/lo speakers.. still using the factory radio

[@Wrathernaut]

+James “Bear” Thomas It might, but I've never worked on an M35, and as mentioned in the description, because of the variation in Bose amps in G35s, it doesn't work reliably using this method. Some work, some don't.

[@TheRariza23]

Where do the other 2 rca go to ? I’m only getting sound on my rear speakers

[@sammyeggnog]

Right front speaker(+) - gray Right front speaker(-) - gray w/black stripe Left front speaker(+) - white Left front speaker(-) - white w/black stripe Right rear speaker(+) - purple Right rear speaker(-) - purple w/black stripe Left rear speaker(+) - green Left rear speaker(-) - green w/black stripe Make sure each of the connections on your harness and the RCAs are secure

[@Oscar-lo4fh]

Hi i have one question for you where do the 4 rca wires connect to ? Is it to the new aftermarket radio or to the cars amplifier rca? That's the only thing in confused by places help thanks

[@Wrathernaut]

In this video, I was running to the factory Bose amp. However, the Bose amp is inconsistent as to whether it will work, so if you're keeping the Bose amp, use the PAC ROEM-NIS2, it has a much better success rate than the 70-7551.

[@Oscar-lo4fh]

Wrathernaut what if I don't want to use the cars amplifier will the speakers work the ones in the doors?

[@Wrathernaut]

Oscar Trujillo you need an amplifier for the speakers. It can be the Bose amp, an aftermarket amp or the radios internal amp. If you're using internal, use the 70-7550 harness and wire around the Bose. Aftermarket, use the 70-7550 and run your own rcas to the amp, using stock wiring to go to the speakers. Bose amp, use the ROEM-NIS2.

[@ballin20003000]

where did you get the radio dash kit... all I've been are kits with gray buttons and not the black buttons

[@Wrathernaut]

shawn j Google for Wrathernaut's G35 double din, you'll pull up my guide on G35driver with several sources for the JDM trim.

[@ballin20003000]

OK thanks

[@ballin20003000]

Wrathernaut help

[@Wrathernaut]

shawn j best place for getting help is the g35driver forums, PM me over there, or make a post in the audio/video forums.

[@ballin20003000]

OK I will check

[@djsir901]

+Wrathernaut @Wrathernaut Please help me with this. IHow did you get the factory buttons in a Metra double din kit. All the metra kits I've seen have crappy buttons. but my cd changer is going bad so I have to do something

[@Wrathernaut]

Go to g35driver(dotcom) and check my post at the top of the a/v forums for any questions you may have.

[@cubang10]

Seems like the RCA takes power away.