1992 w140 chasis . left turn signal started blinking on its own randomly. then stayed on solid no flashing. right directional works properly. hazard only flashes on right.left stays solid. have to pull fuse to shut off!! please help electrically challenged any advice will be welcomed.

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1992 300sd??
1996 1500 6.5(sold)
1995 3500 6.5
1991 2500 6.2