The left headlight is extremely dim, the windshield wipers will not work when the headlights are on and the left side of the instrument panel will not light up either.
I had the same problem 1998 ford ranger. left headlight very dim. right head light worked normal. pull back for high beam flash left dim headlight would go out. put on high beems left light got even more dim. trouble shot wires and replaced blinker/high low beam/whiper unit didn't fix. replaced headlight didn't fix. looked at wireing harnes connecter that conects to headlight bulb and center (black Wire) female contacts was open more than the others. (was making weak contact (ground)
FIX:::: SLIGHTLY BENT BLADE ON HEADLIGHT TO MAKE BETTER CONTACT WITH WIRE CONECTION WITH WIDER FEMALE CONTACT RECPTICAL. HEADLIGHTS BRIGHT AS EVER AGAIN. PS ALSO PUT DIELECTRIC GREASE IN CONTACTOR.
HOPE THIS HELPS
You have a bad ground, look out by the battery for a bunch of black wires screwed to the body of the car, check that they have a clean and tight connection, scrap off any paint under the wires.
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