Installing Classic Ford Mustang Fog Lights - How To Install GT Foglights

13. Reinstall the grille with the foglight assembly attached.

14. In factory '65-'66 GTs, a pair of 31/44-inch holes were cut in the radiator support for the foglight wiring to pass through. Most radiator supports have dimples to locate the positions of the openings. You can use a hole-saw or step-type drill bit to make the holes. A plastic grommet is supplied to prevent chafing the wiring.

15. The wiring for the Viginia Classic Mustang foglight kit is identical to OEM. Per the factory installation, the harness connects into the headlight-switch harness so the rear taillights illuminate when the foglights are switched on. The circuit breaker mounts on the firewall.

16. Route the wiring along the radiator support and driver-side engine compartment.

17. On factory GTs, the foglight switch was located on the extreme left side of the instrument panel, near the courtesy-light switch in the door jamb. However, on a non-factory-type installation, the switch can be located anywhere, including underneath the instrument panel.