First let me expalin what I'm working with...

Putting a '97 LT1 into my '91 z28, using the '97 harness however I am using an OBD1 pcm.

I'm wanting to wire this car as if I was using an OBD1 harness in the first place, for tuning reasons and so I can use the ALDL connector thats already in the car.

So the issue I am running into is figuring out what wires go into the c100...all the pinouts I can find are for 94-95 and earlier harness's and they are different than my OBD2 harness in this area. Anyone know where I can find the info that I need?

Thanks

 

IIRC, the aldl wiring on the 3rd gens is in the C207 harness on the passenger side, not the C100 on the driver side. have you checked out http://lt1swap.com/wiringharness.htm ?

 

That could be true, I haven't got that far so I'm not sure yet. However, the only pinout lt1swap.com has is for a '94. They don't have the pinouts for my 96-97 harness OBD2 harness, so I'm still looking. The problem that I'm running into is that my OBD2 harness has a c100 & c105 plugs where as the earlier OBD1 harness' have only the c100. This is why I need the pinout for the later model harness, because I can't tell what is what without it.

 

Wait a minute....it looks like the '95 LT1s had both connectors also, so I think I could use a pinout from a '95 as well as '96-97...hmmm...I'll go look on shbox.com and see if he has the one for a '95

 

IIRC the 95 dose have both and shbox has 93-97 pinouts.

 

ALDL

4th gen C230 pin C WHT/BLK to 3rd gen C207 pin E WHT/BLK
4th gen C105 pin E TAN to 3rd gen C207 pin J ORN

Stock 3rd gen OBDI ALDL is reused

http://shbox.com/1/DLC_wiring.jpg
http://www.austinthirdgen.org/mkport..._1992_C207.gif

 

Thank you!