Curious if there are any differences. LIke are any plugs different?

Are they interchangeable??

Shane

 

wow im a idiot i thought it said si and hf badges.hehe sorry for my dumbness.but i think they are the same except for the egr?but im still a noob so who knows...


Modified by d16efhatch at 11:58 PM 2/28/2006

 

I think some of the pins are different and the locations of some sensor wires and grounds are at different locations..Also the 88 harness is different from the 89-91 harness..Cant answer your question %100 though..sorry

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecn8ive &raquo;</TD></TR><TR><TD CLASS="quote">Curious if there are any differences. LIke are any plugs different?

Are they interchangeable??

Shane</TD></TR></TABLE>

Yes there are differences.
Plugs are the same. Pinouts are different
Interchangeable? With a little work.

http://effinmotorworks.com/HF_to_Si_compare.htm

 

Thanks Davens. .Always have good info

 

I pulled a HF harness off a crx in the yard, I was planning to use it for my MPFI swap, most the guides are for SI wire harnesses, would this be a issue?

 

same plugs just different pinning. The driver side shock tower plug pinout is different.

I know that the injectors are pinned differently and on the HF harness there's a white igniter wire going through that side and on the Si harness it's for the .......ummmm ahh sh*t I forgot, some air valve I think.

I know for a fact that you need to re-pin that side of the harness, and re-route the dizzy wire to the appropriate location.


BTW I just used an Si harness on my HF when I did the OBD0 to OBD1 conversion. So that's how I know. And now the car runs fine.

 

HHHMMM well I just got done dropping a d16a6 that was out of a 91 CRX in my 88 HF and all if the wiring went perfectly fine. I had to extend a couple of wires with pig tales to make them reach but except for that and one change of a plug for the little vacume sensor thing in the back. Started up first try no codes and is running great. I didnt have to change any of the pins at the ECU.

 

shoudl have clarified it better its for a 90 CRX HF and 90 CRX SI I am aware that the 88 is the oddball.

 

hf has egr, si doesn't
hf doesn't have ficv, si does.

Whats the pin difference @ the shock tower, and for what years?

 

Oh yeah I am already aware of the differences as in the ecu connection, lol, I figured that out yesterday looking through the helms. But I am wondering if the ENGINE harness alone is different? All it seems to be is a couple of extra plugs. Cuz in the Helms it keeps stating the Si/HF as having identical wiring besides, shift light, reverse, egr and dashpot.

 

dash pot? Shift light is on auto's if i remember correctly.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecn8ive &raquo;</TD></TR><TR><TD CLASS="quote">shoudl have clarified it better its for a 90 CRX HF and 90 CRX SI I am aware that the 88 is the oddball.</TD></TR></TABLE>
ahhh allow me to clarify as well that the Si harness came from an 88 and I hacked it all up to work on my 90 HF. Sorry for the confusion.