I have an 88 Formula and got rid of the tailights for the ones on the 91 Trans Am GTA's. I hear that the wiring needs to be changed a bit. Any info on this? Thanks guys,
-paul
Did i mention that you ALL rule? :hail: :hail: :hail:

 

The TA and GTA have dual filament lamps, while the SC and Formula have separate lamps for the turn signals. The wiring changes would probably invlove the turn sinal switch/brake light switch wiring as well as the lamp socket swap.

 

huh?

 

transam taillights will physically bolt in place of the taillights on a base model firebird or formula firebird without any issues.

big issue is electrical wiring. to get the t/a lights working on a formula, one needs to install the taillight harness from a donor transam, and then needs to splice some wires under the dashboard.

if you do not know how to read electrical schematics or do not know how to use a soldering iron, it is probably not a good idea to attempt the transam taillight swap.

if you elect to try the swap, get a real repair manual for the car not the cheap aftermarket haynes or chiltons manual. if you do not already have one, see this thread:

https://www.thirdgen.org/techbb2/sho...hreadid=114168

for some more info on the taillight swap, see this thread:

https://www.thirdgen.org/techbb2/sho...hreadid=109514

 

So for example if I have an 82 TA and want to use saaayyyy GTA lenses, I wouldn't have to change anything around?

 

there are three distinct revisions of thirdgen transam taillights.

82'-84' signified by big grooves in the lights
85'-90' smooth with a black checkerboard pattern over the lights
91'-92' similar to 85'-90' but has pontiac written on it in large block letters

very early thirdgen transams used a different number of taillight bulbs and different size taillight sockets than later transams did.

 

<img src="http://tbirdheritage.home.mchsi.com/misc/transambrake.jpg">

JT
'88 Trans AM 305 TPI

 

Yeah! Those are the one's I like. :hail: