Dash wiring with p28 - Tuner-Junction

Si? · #1 (**permalink**) April 2nd, 2006, 09:36 PM

Will all the dash harness of a 90 dx plug into a p28 im guessing it wont but hoping it will, if it doesnt could you help me out thanks.

jadkar · #2 (**permalink**) April 2nd, 2006, 09:40 PM

You need an ECU adapter on any model CRX. The Si's are a little easier to do but at the ECU side you still need an adapter.

Si? · #3 (**permalink**) April 2nd, 2006, 09:55 PM

ok so ill just need an adapter for the dash stuff to the p28? Does all the usual harness sites have it? Also here in Mo. we dont or at least in bfe we dont have emissions testing and i was wanting to clean the bay up alittle and i was wondering what all shit i can take off that might be emissions related or not. Thanks

njn63 · #4 (**permalink**) April 2nd, 2006, 09:56 PM

Quote:

Originally Posted by jadkar

You need an ECU adapter on any model CRX. The Si's are a little easier to do but at the ECU side you still need an adapter.

yep. Plugs are completely different.

Si? · #5 (**permalink**) April 2nd, 2006, 10:47 PM

Know were i can purchase one? or could ya throw me a link on the stuff to change?

jadkar · #6 (**permalink**) April 2nd, 2006, 10:51 PM

Quote:

Originally Posted by Si?

Know were i can purchase one? or could ya throw me a link on the stuff to change?

LoCash Racing

http://www.locashracing.com/

njn63 · #7 (**permalink**) April 2nd, 2006, 10:54 PM

www.boomslang.us
www.rywire.com
www.jdmshit.com

Rywire also sells some on ebay. I was pissed when i found this out because i could of saved like $10 (and i had free shipping which already saved me $10!)

edit: If you want to DIY, here is a writeup: http://www.pgmfi.org/twiki/bin/view/...KurtsOBD0-OBD1

Si? · #8 (**permalink**) April 2nd, 2006, 10:54 PM

OK would it be this one? http://locashracing.com/store/produc...products_id=39
if so will it matter that im running the full z6 harness from the motor all the way to the p28? or are the obd0-obd1 harnesses just intended for the dash compnents?

I think i just realized how much a duche i am, but im going to wait to see what is said first....shit

njn63 · #9 (**permalink**) April 2nd, 2006, 11:00 PM

Um.. i hate trying to give wiring advice over the internet haha.

But if your car is running fine off obd0 in mpfi form, the conversion harness with dizzy/o2 sensor/p28 installed should run perfectly. I'm not sure how you're doing it but the DPFI harness has a couple things in the wrong places for an MPFI ecu so the conversion harness won't work without that being done.

Si? · #10 (**permalink**) April 2nd, 2006, 11:06 PM

Ok, this is what im doing. I have the stock z6 harness that goes all the way to the ecu that includes the one that goes though the firewall into my p28. Now the only prob i can see is that i dont know if the dash harness will plug into the p28. Im not using any dx harness except the one in the dash thats it.

jadkar · #11 (**permalink**) April 2nd, 2006, 11:11 PM

Well this is my issue with everything your saying.....

What the hell is a "dash harness"??

My plug that goes into my ECU consists of roughly 40 pins (rough guess) some go through the firewall to the engine, some go back up into the dash. But there's no specific "dash plug", the loom is all wired together and is fed into the ECU plug.

Si? · #12 (**permalink**) April 2nd, 2006, 11:12 PM

good point and thats why i said i feel like a duche in the other post.....humm so my solution is use that conversion harness?

jadkar · #13 (**permalink**) April 2nd, 2006, 11:16 PM

Quote:

Originally Posted by Si?

good point and thats why i said i feel like a duche in the other post.....humm so my solution is use that conversion harness?

Conversion harness is the way to go. Now like Njn said giving wiring advice on the internet is nutty because everyone's set up is a little different.

You WILL have problems somewhere...it's just bound to happen. My project was 9 months doing and 9 YEARS planning and I still had huge problems. I had a wiring gremlin that took me 3 weeks to solve. Many CRX gurus here remember that nightmare.

njn63 · #14 (**permalink**) April 2nd, 2006, 11:17 PM

i think it'd be way easier to just convert to mpfi obd0 and then use a obd0 -> obd1 conversion harness. I think i've said that like 5 times though haha.

njn63 · #15 (**permalink**) April 2nd, 2006, 11:20 PM

Quote:

Originally Posted by jadkar

You WILL have problems somewhere...it's just bound to happen. My project was 9 months doing and 9 YEARS planning and I still had huge problems. I had a wiring gremlin that took me 3 weeks to solve. Many CRX gurus here remember that nightmare.

Yeah, i just read that post and pressed back because you had already checked everything i could think of. I have an HF right now that i've spent hours trying to track down wiring problems in. Seriously rediculous. I'm lucky in the respect i can go to my black car and see how it's supposed to be but it's still the biggest headaches ever.

Si? · #16 (**permalink**) April 2nd, 2006, 11:35 PM

lol yea i know u have ninja and jadkar i remember when u had all those probs. i have just tried to think about this shit to much and have totaly confused my self just plz lock this thread i have everything figured out thanks again