hey everyone so my dad and I are trying to set the IAC and TPS but when we go under the dash to jump the computer into diagnostic mode, the ALDL plug is missing a lot of connections. I have a factory service manual and a bunch of stuff off this site. so this is the question I need to find the color of the diagnostic wire and I think it is orange. and the ground is black with white tracer. if anyone has had this issue or can help out it would be great thank you.

 

On an '85 TPI (and newer for that matter) it is pins A & B on the ALDL connector. A being ground (BLK or BLK/WHT), and B being the diagnostic lead (WHT/BLK).

RBob.

 

Thank you for the info. I will be checking that and I will let you know how it does thanks bob