90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
Brake Lamp: Testing and Inspection
Quick-Checks:
1. Check fuse #3 (S3) by turning ignition key to "On" and testing the horns. If the horns work, then fuse #3 (S3) is OK.
2. Check ground connections (Coupe Quattro only) by checking other rear lights. If they are also off, look for a poor connection between the rear
lamp assembly connector(s) and ground. See wiring diagram for terminal identification. See: Diagrams/Connector Views