Turn signal issue on a 1992 explorer RWD

[abrilsdad]

I have a problem with turn signal on driver side.
The rear stays on steady when activating and the front light doesn't come on. The passenger side works just fine as well as the hazards on both sides.
I have put all new bulbs. I even tried a new turn signal switch still the same.
With a test light on the rear socket its bright but on the front socket it is dim.

A wire diagram would help as well as knowing where the wires are routed
also if anyone just knows what the fix is.

 

[ChildIdenticant]

Maybe...be corrosion on the front wiring/socket, preventing the flasher from heating enough when only the left circuit is engaged...
Looks more likely a multifunction switch issue though.

 

[abrilsdad]

Mulit function switch as in the turn signal lever? I did replace it and still an issue. Socket not corroded.