F 350 4WD Super Duty V10-6.8L VIN S (2004)
Test AC3 Continued
Tests AD
"Ford service information indicates the Trailer Tow Parking Lamp Relay is within the Central Junction Box (CJB). However, related system testing
and the CJB wiring diagrams do not indicate that the relay is serviceable seperate from the CJB".
PINPOINT TEST AD: THE TRAILER LAMPS ARE ON CONTINUOUSLY
Test AD1
