You should have 3 wires to the rear. L & R brake/signal and tail light. Your 4th wire may be for an auxiliary brake light.


There should be 2 wires going to the right side, R brake/signal and tail light. You need to figure why you have 3.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.