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HELP! differences between '98 and '99 civic ex engine wiring harnesses??

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HELP! differences between '98 and '99 civic ex engine wiring harnesses??

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Old 03-17-2013, 04:19 PM
  #26  
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

he still needs to use the 96-98 ex harness and 96-98 P2P ecu while swapping a 99 motor into a 98. the 99 was a PARTS CAR.
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Old 03-17-2013, 04:22 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

Originally Posted by apexi_rsx View Post
he still needs to use the 96-98 ex harness and 96-98 P2P ecu while swapping a 99 motor into a 98. the 99 was a PARTS CAR.
Wrong guy dude. The OP started this thread 6 years ago, look down closer to the bottom of the first page.
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Old 03-17-2013, 04:54 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

Wow what a confusing thread. Basically I think that the ECU should have been taken out of the equation to determine the correct harness for his car. I know the thread is 6 years old but after tossing on a 96-98 ex harness on my b16a2, into 97 hx obd2-obd1 conversion (p28 ecu) I'm hoping that I don't run into any of those problems. After all my research and a ton of money I would just sell everything. *Fingers Crossed*
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Old 06-12-2017, 06:08 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

Originally Posted by gezzuzz View Post
his best bet is use the 98 harness on the 99 motor
can you use a 97 harness supposedly d16y8 on a 99 from what i was told my engine is a d16y8?
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Old 06-13-2017, 03:09 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

99 distributor plug is different but you can swap those over. As long as both are both auto or both manual you'll be fine.
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Old 06-13-2017, 05:18 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

Originally Posted by HondaPartsHero View Post
99 distributor plug is different but you can swap those over. As long as both are both auto or both manual you'll be fine.
is it just the distributor or the altinator too?
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Old 10-28-2017, 12:36 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

Originally Posted by apexi_rsx View Post
dash harness is probably different in the 99-00 and the 99 harness will not work

his option is to get a 96-98 engine harness and run the 96-98 ecu ONLY

I'm having a similar issue : 97 ex y8 2dr engine and harness and ecu are in a 98 lx y7 4dr car - and the harness(es) from the car are not matching the ex engine harness - there is one extra plug from the 98 lx car supposed to go into the ecu, and one missing plug going into the engine bay at the left rear (by the driver) it is labeled as c136. What to do!? Ive seen so many guides online but they all say different things and Im just confused! Should I use all the 98 wiring and electronics, then re-wire the engine side to match my 97 y8 motor with the 98 y7 harness and body (and what would those mods be? Is it possible to put the lx exhaust on the ex engine, as they are different and I might have to buy an ex exhaust? Would this yield check engine codes or inefficiency in engine operation?

Last edited by WeekendWarrior1; 10-29-2017 at 04:17 PM. Reason: Add explanation
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Old 10-28-2017, 01:00 PM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

where does c136 go?
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Old 10-29-2017, 11:42 AM
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Default Re: HELP! differences between '98 and '99 civic ex engine wiring harnesses??

C136 engine harness connects to c305 cabin harness : its a 4 wire 8 pin connector with a white/red wire that is labeled 'interlock system', and three other ones (white, blue, green/black) that are labeled A/T controls.
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