Reverse Lock Out Quick Tip

Type S Engine Harness Hack: How to convert your engine harness to work with what you've got.
By Brian Gillespie
You've got you K-series engine with 6 speed transmission ready to swap into your Civic with one little exception. No Type S engine harness. They say used ones go for $100-250 but they are nowhere to be found. You can buy it new from Acura for $550 to $800. You can buy a Mil-spec harness for $650 to $900. Crap! What do you do? Well once again, VTEC Academy to the rescue once again with a budget solution. With these simple steps you can easily convert a base model RSX harness to work with your 6 speed transmission.
Oh crap again! You don't have a Type S ECU? Not to worry. Look for another quick tip coming soon on how to operate your reverse lockout without a Type S ECU. We got this, and now you will too.
Are you looking for tools we used to de-pin the ECU connector like we did in this video? Check out VTEC Academy's Amazon Store to find tools we recommend for working on Honda electronics. www.amazon.com...
We’d Love Your Support
Like us? Help Support VTEC Academy by hitting up our store for gear at vtec.academy/shop/ or help us by sharing (it’s free!) this post or others with other cool Honda people.
Nothing but Hondas. That’s exactly what you’ll find at VTEC Academy. Because Soichiro Honda’s passion for motorsports and his company’s ability to express that in the machines they produce make a whole lot of sense.
VTEC Academy is a place for Honda fans who feel the same way and who seek the most accurate technical information and commentary to continue that very legacy and make whatever Honda it is that they drive just a little bit better. And faster.The editors and contributors of VTEC Academy are some of the industry’s most experienced and trusted, which means the informative, unique perspectives you need are all right here. And, like you, we’re also obsessed with Hondas.
So, subscribe to our channel and hit us up at vtecacademy.com or, if you’re into social media, you can get your daily dose of VTEC Academy on Instagram, Facebook and Twitter. We’re always on the lookout for cool and fast Hondas.
DISCLAIMER:
VTEC Academy videos are for educational and entertainment purposes. We can not guarantee the modifications performed in the video are legal in your locality. Do not do any modifications to your vehicle that will void your warranty or in any way violate your local laws. We assume no liability for property damage or injury as a result of any of the information contained in this video. Use the information provided at your own risk.

[@gabrielgardea5263]

Your ever best like doctor for vtec everything! Thank you!

[@russthebus477]

So for the 2005 rsx base the wire will be red/blue and will be on connector A pin 11 👍 and yes move it to connector c101 pin 12, thanks for the video it was alot of help 🤘🤘 keep it up

[@cristiangarciamoreno1001]

Was looking for this answer, thank you

[@jesbaez5229]

Awesome video Brian. Pure gold. Please make your next QuickTip video about 3 ways to operate the reverse lockout w/o type s ecu soon. Thank you.

[@ChrisMan183]

was this video ever made?? I'm just gonna install a toggle switch

[@Archetype123]

Needed this. Perfectly spoken, and simply put. Got my hands on a K20a2 engine, trans and ECU, but no harness for a swap in to my EP3.

[@bseries8826]

You can use the ep3 harness. That's what I did but I have a k24a2

[@gabrielgardea5263]

I'm second that too!

[@punkaddic]

Awesome info Brian ! Thanks so much. Now make another tutorial for newer style vss in a swap using k-pro

[@BruceLee-xp5fc]

This guy is a genius

[@UnderdogPerformance509]

Did you guys ever make the video explaining how to operate reverse lock out without a type a Ecu? I’ve looked through all your videos and can’t find it.

[@bsbuilt]

Doing a k24a2 with type s 6speed in an 04 base model and this came in handy, thanks!!!

[@VTECAcademy]

Happy to help!

[@Steve_S419]

Very helpful indeed! When the wreckers put out a type s I'll be out there ripping it out for sure! However I just recently aquired an 05 base manual trans, shifter box, cables and ecu from the junkyard and want to help do a manual swap to my buddies' auto 05 base rsx. Guess I'll be looking at your article and buggin you if I have issues with wiring when we tackle that. :) Thanks for the awesome videos!! Steve

[@Brock_Landers]

Brian I have a 2004 Acura TL base model with a manual harness, a 2003 Acura CL Type-S six speed, a 2007 TL Type-S manual ECU with Hondata FlashPro and the adaptor harness, a stock replacement Exedy clutch and flywheel (absolutely unparalleled quality and longevity, I've used it at over 500 whp with my boosted J32A in my Accord for 20,000 miles and its still going strong), and it has a GTS3582 turbo at around 5-6 psi and it keeps eating reverse in the manual transmissions that I have. V6 six speed manuals are expensive. My 03 CL trans was $1500 and my 05 Accord (with an 03 CL LSD diff) was $700 plus another $300 for the CL diff. I've already rebuilt the CL trans with a new reverse synchro and cuff, but I went from 5th to reverse once on the highway and it ground for a split second and now I have no reverse. I spent over $200 for the actual OEM Honda parts. I found out that I didn't have the little spring and plunger that goes into where the reverse lockout solenoid installs, so obviously it's not going to work without that. Anyway, after purchasing another complete reverse gear stalk I'm going to attempt it again. Wish me luck! I'm tired to having to replace these transmissions due to no reverse!

[@VTECAcademy]

Try this. Before you put the car in reverse, put it in second first and then reverse. That should stop the transmission from spinning and eating the reverse synchro.

[@Solefresh10]

Great info Brian! Thanks for the info and knowledge

[@G23teknik]

GREAT VIDEO!!! Please make more of these type of videos. The most difficult part for me to source for my K swap has been the engine harness.

[@hondaresource]

Just curious if you still plan to upload a tutorial on operating the lockout without a type s ecu

[@VTECAcademy]

I do. I hope to finish it this weekend and have it up soon.

[@wfmcurrie]

@@VTECAcademy can’t wait for this one

[@brandonbruce2772]

If you are using a PND ECU with K-Pro V4, I believe you would put that wire to B22.

[@patriciabaez3333]

@@VTECAcademy Thank you for sharing Brian. Cant wait for the 2nd part of this one.

[@leick10]

@@VTECAcademy I've been looking all over for the video on reverse lockout without the PRB ECU. Where can I find it? Thanks.

[@bukhadavid]

Where the link video If I don't have a type a ecu for the reverse lock out?

[@AmericanRustWorker3369]

I wish these guys had a website to learn about different conversions and set ups for different years Honda’s, I have a 91 crx and can’t find out a lot about it, like if my ZC engine was factory or not

[@miriamvivo4279]

I don't have a acura type s . I have a 98 prelude, a 06 subie sti. But I may one day. Best wishes from ct.

[@aaronrodriguez7786]

Keep this videos coming thank you for all this info!!

[@TrackSol]

Awesome tutorial!

[@lipsnatchertv2649]

Hi. Where can I find the video for the other 3 ways you mentioned to wire up reverse lockout? Thank you and great videos!🙏🏾👍🏾👌🏾👏🏾

[@VTECAcademy]

I need to finish that.

[@lipsnatchertv2649]

@@VTECAcademy can you just add 12v and ground to a switch and have it working that way? Thanks.

[@wolfywolfwolf9871]

@@VTECAcademy did you get to finish the other video?

[@punkaddic]

Found the plug for the reverse lockout on my canadian base RSX harness but the signal wire is Red/blue and it's on pin B22. Are canadian harnesses different than USDM ?

[@BD-te7sl]

Awesome, so simple!

[@JDHogg1923]

Did you ever make the video with the non type s ecu?

[@nanv8711]

Thanks so much🙌🏼!!!

[@philsayer9797]

Speaking of lockout, how about a definitive fix for the FK8 5th to 4th Gear 'block' issue? I'm still not convinced it's entirely the CDV that's to blame! PS Thanks for the vids Brian!

[@bseries8826]

Lock it out baby

[@537R4HC]

any1 got the links for nxt video? for 05 06 non type S ECU lockout wirings?

[@thaysankean479]

Why is the wire on the sensor plug (red/blu) goes into B22? And A8(red/yel) goes to the charge harness plug?

[@HondaStreetGarage]

yay!!!

[@da73]

Do you have a link yet for the three ways to operate the lockout without a type s ecm? I’m assuming one way is with a switch?

[@somuchjuice5528]

Does anyone have the link to the non- type s Ecu?

[@londondcpublicidad6640]

How do you wire it if you are using a stand alone ECU?

[@aaronrodriguez7786]

Can a auto rsx base model be converted to a type s engine harness or it has to be manual also will all harness work like 02 to 04 or 05 06? Do you have a diagram on this

[@crsbke4524]

Hi I got a 2003 Honda accord I want to swap a k24a2 want to put a 6speed manual can i used a Rsx type s harness and k tune Rsx type s will that work??

[@kakagrant7722]

Hey how are you doing? I was trying the lock out conversation on my ep3 harness. I see the plug on the harness but the wire from ecu plug a8 to remove is not there. So where would I find the wire if it’s not in that location

[@Nes_2k]

So if we don’t have type S ecu do we rely on Hondata?

[@Cloneufc]

If you were building this from scratch, where would you get the power source to tap into for the Black/Yellow stripe wire? Could I tap into the harness power that goes to Pin 2 and Pin 3 on connector A on the 02-04 harness? 2 YEL/BLK IGP2 (POWER SOURCE) Power source for the ECM/ PCM circuit With ignition switch ON (II): battery voltage With ignition switch OFF: about 0 V 3 YEL/BLK IGP1 (POWER SOURCE) Power source for the ECM/ PCM circuit With ignition switch ON (II): battery voltage With ignition switch OFF: about 0 V

[@ayodurp2055]

🐐🐐🐐

[@tetfemal03]

Would I be able to do this mod if I'm running a k24a/k20z3 head and a awd element transmission that has been converted to a 6spd?

[@VTECAcademy]

Yes, the lockout solenoid is on the 6-speed shift mechanism.

[@GOLDINFERNO123]

would something like this work for the 2007 accord? I have the 5 speed manual but im planning on swapping the tsx trans in there.

[@brandonbruce2772]

Are the RSX Base manual/auto harnesses the same?

[@lafave2555]

Do you guys happen to know if there are any tricks to use the EP3 Civic Si wiring harness (since the EP3 uses the aluminum intake manifold)?

[@VTECAcademy]

You would have to add the wiring. I will go over that in a future video.

[@nanv8711]

I’ll be waiting for that video

[@AlmightyChalee]

@@VTECAcademy I'm excited for this ep3 video. Been trying to figure this one out myself.

[@nickwoods]

What about the manifold runners? Does that connector also need to be plugged in?

[@da73]

Not if your running a single stage manifold, which all type s swaps are running.

[@pFbSpecV]

What exactly does the reverse lockout do???

[@jesbaez5229]

It keeps you from shifting into Reverse when trying to go into 6th. I know I know... but it's a cheap insurance anyway.

[@pFbSpecV]

@@jesbaez5229 makes sense!

[@luscienharris3535]

I have full tsx swap in my ek civic Can this also be used for tsx 6 speed transmission ?

[@VTECAcademy]

It can, but you'll still need an ECU or something to control the reverse lockout solenoid.

[@kennymartinez973]

Can you use a k pro to control the reverse lockout?

[@da73]

Yes you can

[@gilbertoalba2147]

Wondering if you make kswap mounts for 3rd gen prelude?

[@VTECAcademy]

I'm sorry, but Hasport doesn't.

[@gilbertoalba2147]

@@VTECAcademy does any one make a set? And ty

[@landoski]

This work for a base model auto rsx engine harness?

[@da73]

It should, as the base a/t harness also has imrc

[@ErKing-zj4pl]

Is there any difference between the TPS pin outs? Between a Type S and base model. I think I read online that the two outer pins have to be swapped around. When using a base model harness on a Type S engine. Is there any other differences between both engine harnesses?

[@BrianGillespie_brianathasport]

There is. New quick tip coming on that after the crank angle sensor quick tip.

[@alwyzjwalkn]

Good afternoon quick question on this on a ep3 harness with type s ecu. I’m not using evap can I use power and signal from evap to make a reverse lockout? Can I depin signal wire to b7 and enable evap on kpro for power?

[@VTECAcademy]

K-Pro has several output options for nitrous control. Just look those up and use one of them.

[@alwyzjwalkn]

@@VTECAcademy awesome thank you!

[@popejbryant]

What if you're sending an non Type S ECU off to hondata? Will the modifications they make allow you to be able to operate the reverse lockout through the ECU?

[@VTECAcademy]

Ask them, but I don't believe so. With a Hondata you can use one of the alternative outputs you might use for Nitrous control to turn that reverse lock out on and off.

[@brandonbruce2772]

With a PND ECU with KPro V4, using a PRB calibration, you would pin the reverse lockout to B22 and it will automatically work, just like a PRB ECU. "Changed PRB calibration to activate reverse lock out via pin B22 (secondary intake runner). This allows PND ECUs to be used rather than the PRB ECU." www.hondata.com/forum/viewtopic.php?t=18179

[@nationaliste007]

Hi I got 04 base ecu hondata... can I just use the same connector to the ecu to reverse lock. Thanks

[@VTECAcademy]

You will need to use some other output to control the reverse lock out. The base ECU doesn't have the correct output.

[@brandonbruce5571]

​@@VTECAcademy Form what I have read B22 in Hondata KPro V4 will automatically activate reverse lock out now. Coincidentally, that plug you are showing goes right to B22 on the 02-04 RSX Base harness.

[@VTECAcademy]

@@brandonbruce5571 Correct, but if you have a Type S ECU, then you need to move the wire'

[@brandonbruce5571]

@@VTECAcademy Correct, move it over to B7 if you’re on a stock Type S ECU. If you are running KPro V4 on a PND (base 5spd) ECU you now got reverse lock out from B22 and no need to go for a Type S ECU with Kpro.

[@12buckelmyshoe34nottellingyou]

So, do you not need that intake manifold runner solonoid on a swap?