Vito w639 indicator left hand side not working

[Tysayp]

Good day

Vito w639 left hand side indicators not working. Signal comes up on dash extra quick for left hand side. need to figure out where relay location is so can switch left and right

 

[optimusprime]

I would check all the bulb holders ,and smear a little vasaline on the metal part of bulb plug back in try again.If you have the new type bulbs then look for earth points and wires in the rear light and front light your having problems with.

 

[Tysayp]

regards
Changed the SAM unit and the front left and wing indicator very faintly comes on with a noise coming from in the cab (like a faint buzz every-time the indicator illuminates). after maybe 30 secs - 1 min they stop working until i witch hazards off and on again.
rear doesn't work.

Makes me think i have nicked a wire at the rear loom which is shorting the rear to ground.

Would this cause the original sam to eventually burn out and drawing more power to the rear causing the front two to luminate faint then go off?

Not sure if i am going along the right lines.

regards