2012 F350 6.7L Dually. .. No Right Turn/stop lights.
First to clarify things.. I do have turn/flasher on front of truck. Just no turn/flasher/ brake lights on rear of truck nor trailer if one is connected. Checked all fuses and bulbs.. Even replaced the fuses just in case. Replaced both left and right relays (75 - 76) under hood. Left relay does click when flashers or turn signals are on.. Right relay never does click. This is my work vehicle (CMV) I pull a gooseneck trailer and must have signals and brake lights to be DOT compliant. Like I stated this is with or without trailer connected and doesnt affect front right turn signal. Please help !!