Troubleshooting Hints
1. Check Fuse C-12 by observing operation of the turn signals.2. Check BACKUP LAMP bulbs.
3. Check that grounds G403, and G404 are clean and tight.
4. If only one lamp is inoperative, check for an open in the RED/BLU wire between the lamp and S408 or in the BLK wire between the lamp and ground.