pics added to post
 

here are 2 pics of the 3rd brake lite lamps. pic 2 shows the 2 blk wires attached together, the purple wire to the pwr orange wire and the green wire to the pwr orange wire. these 2 lamps are the cargo lamps that go into the 3rd brke lense. this pic is clearer than 001jpg. in the 12:00 pic notice the white wire for the 3rd brake lite. 1 color wire is attached to the 3rd brake wire white w green, the blk wire goes to ground. the 3rd brake lite works fine thanks for any help:gmc2: