B350 1 Ton Van V6-239 3.9L (1990)
Backup Lamp Switch: Service and Repair
1. Unscrew switch from transmission case, allowing fluid to drain into container.
2. Move shift lever to Park and then to Neutral positions and inspect to ensure switch operating lever is centered in switch opening in case.
3. Install switch into transmission case, torquing to 25 ft. lbs., then add fluid to the proper level.
4. Check to ensure proper switch operation.
