I have a 1989 Chevy Camaro RS...
The problem i'm having is my third breal light is not working i changed all the bulbs in it also cuz 2 dat was in there was burned out i seen so i but 5 new ones in there and still not working.....
I'm thanking that i may have to get the whole new break light part now just tryin to see what info sumbody in here can give me...

 

I just redid the one on my 89 RS. The connector itself (inside the spoiler) failed to get any voltage to the light assembly. I picked up another at a local junkyard for free and spliced it into the present harness. You might also check the contacts by your hatch pulldown to make sure they are clean - there are 2 brass "pins" on the botttom side of the hatch and 4 brass contact "plates" by the latch assembly, the 2 outside ones are used by the brake light.

 

Thanks i'm going to pick one up when i get up this thursday....

 

just check to see if the two electrical connectors coming from behind each rear seat and connecting to the lift struts are connected.

 

If your third light is in the spoiler then the connections are through contacts at the hatch pull down motor area. I had the same problem with my 89 RS. One of the conacts was broken but i jury rigged to work.

 

Thanks yea it was the whole light dats was messed up so i went and got one for $48.00 and hooked it up the other day now it works just fine,i guess the connectors was bad...
But i got it all working fine now thanks for everybodies help....