Reverse light socket when used on many GM US vehicles in the mainly 69-83 era.
TWO wire as shown.
... check yours for likeness.. must be TWO wire NOT THREE NOT 3.
Fit ranges:
| BUICK |
1969-1990 |
| CADILLAC |
1973-1992 |
| CHEVROLET |
1969-1991 |
| GMC |
1973-1991 |
| OLDSMOBILE |
1973-1985 |
| PONTIAC |
1969-1987 |
.jpg "Rocker Panel OUTER: 55-57 Chev (ea) - 4 dr")
.jpg "Fuel tank Sender Unit: 68-74 Corvette")