[Rene M]

Ok i have a 89 CRX hf and i am istalling a 91 CRX si D16a6 with its engine wire harness. I remember that they are diffrent but not pin numbers.
Any one shed some light on this for me? :?

 

[Rene M]

hmmm, the ECU will swap without modding, so, I would assume the engine harness is the same. Electronically, the engine is the same... same injectors; same alternator; sensors are the same, just in different locations; the distributor would be the only thing I can see being different, and that would just be the hf and si plugs.

Thats my guess, I don't remember what we did when we did the same swap on a friend's car. If I remember correctly though, the only wiring change was to swap the distributor, and we used his HF harness.

Hmmm no hf harness.. i need to see what is diffrent between the two.

 

[toxiclows]

distributor is the same plugs right in...... I am not too sure of what else if anythng is different... i believe it all plugs right in... dont think you have to hack up any wiring.... at all

Chris

 

[rex2nr]

hmmm, the ECU will swap without modding, so, I would assume the engine harness is the same. Electronically, the engine is the same... same injectors; same alternator; sensors are the same, just in different locations; the distributor would be the only thing I can see being different, and that would just be the hf and si plugs.

Thats my guess, I don't remember what we did when we did the same swap on a friend's car. If I remember correctly though, the only wiring change was to swap the distributor, and we used his HF harness.

Hmmm no hf harness.. i need to see what is diffrent between the two.

Sorry, I guess I was unclear. I think the only change we needed to make was to the hf harness to accept the Si distributor, so as long as you use the Si distributor, you should be ok. I think that change was just a repinning. Now you have me wondering.... it may have been a DX harness in there, which would make sence as to the distributor change.

 

[Rene M]

Well after a long hard look at the si vs hf harness i came up with ....
They are damn near the same the hf has two more plugs which are not used and my problem resulted from me not bolting down the ground lug on the thermostat housing" the one which supply's ground to the resistor pack". OOps..
So keep that in mind both harnesses will work just fine...
:thumbup:
Thanks for the help guys. :thumbup: :thumbup:

 

[bobski]

" the one which supply's ground to the resistor pack"

Who said that? Give them a swift kick... The resistor pack doesn't have a ground - only power in and out to each of the injectors. Most of the engine management stuff (including the ECU) grounds to the thermostat housing.