Two halves of an opened switch assembly showing copper contacts…

Once all the contacts are clean, apply a light film of silicone electrical grease (NOT dielectric, thermal, or chassis; or battery snot, or anti-seize, or conductive grease), then carefully reassemble the switch. It may be necessary to use a piece of paper to ramp the headlight contacts into their slot. Install a screw near the hazard switch first. '92-97 F-series/Broncos use Motorcraft SW5591.

Upper Connector Motorcraft WPT-611
Lower Connector Motorcraft WPT-179
Electrical Grease (F8AZ-19G208-AA)

Owner caption May 2011 · Photo 3733 of 5000