joey1320

2000 Honda Civic EM1
b16a2 Engine/Trans/ECU
Stock everything.

As it turns out, the engine harness on my EM1 resto project is the worst hacked job I've seen. There are wires cut, spliced and pretty much fucke'd everywhere I look. So as you would guess, I'm looking for a stock harness. One of my friends reached out and told me he will give me his stock '99 EX automatic engine harness, and said it should work.

My question is, what would I need to do to make it work?
I'm running a stock engine, trans(won't matter) and ecu.

I'm comfortable rewiring my whole harness, but time is impossible to find as it is. So a full removal and redo is out of the question at the moment.
On a side nte - WTB '99-'00 SI harnes If you got one lmk.

chrysler kid

I would not use it. Try to find a manual transmission harness

joey1320

There's one on eBay but dude wants $350... Man that hurts ;(

Former User

Blasphemy!

You might try PM'ing HondaPartsHero. He's a wire harness guru.

joey1320

Hahaaha it's nothing but wires and connectors, so if the EX one gets me a 75% stock, non-****'d harness, I can add the rest.
Thanks for the info, I'll pm him now.

chrysler kid

you will atleast have to change out the idle air control pigtail and perhaps one or two other sensors. the auto to 5 speed swap should have more information that you can use about the engine sensors you need to change on the harness

joey1320

I'll need to look at the wiring schematic for both and see what will need to be added, removed and switched around.
If it turns out to be a big hassle, I'll bite the bullet and get the SI harness from ebay.

joey1320

Hmmm looking at the 92-00 Wiring Link, it seems like all I will need to do is rewire my IACV from a 3pin connector, to a 2 pin one. Other than that, it seems like its all good to go.

I need to double check, but considering the car will use the stock 5spd. ecu, it shouldn't look for anything related to the automatic transmission. As long as those wires are pinned to the non-used pins on the original SI harness connectors, I think I'll be okay.

tony_2018

You'll need to repin the distributor plug, iacv, ckf and run the reverse light plug because there isn't one. I believe thats about it.

joey1320

Yes reverse light plug will be needed duh. Thanks for reminding me of that.

**** all in all, it seems like this will save me $350 or the headache of redoing my whole one. Nice!

tony_2018

Since the harness is not on the car I'd clear out anything automatic related and make sure the harness you buy is indeed the ex 99-00 harness or else you'll run into issues.

joey1320

Will do.
And yes the harness is from a '99 EX. I seen the vehicle myself.
Thanks!