What all is needed for this swap? The '85 has 3 wires and the '91 has two.

Thanks.

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'94 Corvette Admiral Blue
-==ICON Motorsports==-
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'91 Z28 Blue/Silver ZZ4/ZF6
335.9 rwhp 374.9 rwtorque

 

The only way to get the 91 headlight motors to work in your car is to get rid of the relays. You need to find the white, yellow, and red/white stripe wires and black for ground wires and discard the rest. You then need to find or purchase the headlight module that controlls the motors and find a wiring diagram (found mine in a chiltions book) and wire it up. I had the same problem my GTA had a engine fire and the headlight harness I got was out of a 86 (relays, 3 wire motors) but my 87 had the module and 2 wire motors. it is simple to do but time consuming.

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89 Iroc 350 TPI,
Forged pistions
Comp roller Cam .510 lift 230dur
Flowmaster exhaust
Dart Iron Eagle heads 200cc runners 64cc chambers
MINI RAM SOON!!!!!
stock TPI for now 24# inj
87 Trans Am GTA 350 TPI
had engine fire
SHE NOW RUNS!!!! GREAT!!
Flowmaster exhaust
LT1 Injectors