Troubleshooting Hints - Interior Lights Dimming

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Make sure Park Lights turn "ON" and "OFF" normally before proceeding with diagnostic.
2. If none of the Interior Lights illuminate, check PARK LPS Fuse.
3. If interior Lights stay "ON" all the time, but Park Lights operate normally, repair short to B+ in CKT 8.
4. If one Interior Light does not operate, check the GRY and BULK wires to suspect Interior Light for opens, bent terminals, etc. If OK, replace Interior Light bulb (see schematic).
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (refer to General Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis. System Diagnosis - Interior Lights Dimming