Hi!
I am Tom from Germany and have a 1987 Trans Am TPI (305ci, LB9) with automatic transmission (TH700R4). Changed my complete interiour wiring harness with analog cluster. Now i have a complete digital dash with wiring harness of a 1986 Trans Am TPI. But i have 2 problems! My 1987 TPI Engine (and later models) have a heater valve system (W/C41 Option), but the 1986 TPI Engine dont have this. No i dont know if i must take out this heater valve or not. Work this automatic air conditioning system from 1986 with this heater valve? Who is the correct place for the little rubber pipe from the heater valve to the interiour?
Search a wiring diagram for a 1986 Trans Am with digital dash. It must be have the complete instruction for the wiring on the heater/cooling unit in the interiourm (dash board). Can you help me?
My second problem was the headlight motors. My Trans Am have a connector with 2 pins, but my headlights (from an other Trans Am) have a connector with 3 pins. How can i do? Must i buy other motors or can i disconnect this connectors?
Thank you very much for your help! Greetings from sunny Bavaria, Germany!
Tom

 

You can either use the later HVAC control head and keep the hot water valve, or eliminate the hot water valve (like the '86 and older models) and keep the control head.

What year/ part number headlight motors do you have?

 

Hi! Thanks for information! The headlights was from a 1986 Trans Am...