Faulty brake lights

[burgo1957]

VZ crewman. When I am in reverse the brake lights go dull and flicker and the instrument cluster lights flicker on. Brake lights work normal when not in reverse. Please advise?

 

[rambunctious]

Trailer plug would be the first place I would be checking.
If the wiring in the plug is ok and correct, then reverse light bulbs and stop tail bulbs would be next looking for incorrect bulbs or faulty/damaged filaments.
Poor earthing of bulbs could also be troublesome.

 

[burgo1957]

Thanks for your input. Found the fault. Wire chaffing created a short to power. Bit of tape and all fixed now.