Headlights Problem..Please help.....

[shawnmd]

OK, I have a weird problem with the headlights on my 69 Charger.  As it stands,when I turn my headlights on, my drivers side headlight(outer) works fine while the passenger side, is on but barely.  Just a slight glow in the light.  I also noticed that the inner passenger light (brights) also has a slight light inside.  This is without the brights on.

When I turn the brights on, all lights go out.  I have checked the two grounds and they seem fine..

Anybody have any idea what this could be?

[darrin75]

Sounds like some lose and corrosion wires there to me, but did you try any other light first just to make sure.  I had a similiar problem I had dims but as soon as I hit the brights all my lights went off, turned out to be faulty 35 + year old wiring problem.  Good Luck

[Plumcrazy]

You have a bad ground.  The low beam headlight is grounding itself through the high beam bulb.  If the grounding points are good the go to the headlight connector and check from there.   Use a test light attached to the positive battery terminal and start following the ground circuit with the test light.  Any place you check with the test light thats well grounded will light the test light nice and bright.   If it's dim, bad ground.

[shawnmd]

Whats interesting is that, with a test light, on the passenger low beam headlight, lights on, brights off, I have power to the pink power wire terminal(normal), power at the ground terminal (normal) and power at the high beam terminal (NOT normal).  I also switched the lights around to ensure it wasn't the bulb itself and both low beam bulbs check out fine.

[Plumcrazy]

Whats interesting is that, with a test light, on the passenger low beam headlight, lights on, brights off, I have power to the pink power wire terminal(normal), power at the ground terminal (normal) and power at the high beam terminal (NOT normal). 

You have power at the high beam terminal because the two filiments share a common ground inside the bulb and you have the connector plugged onto the bulb.  If you unplug the connector from the bulb you won't have power at the high beam terminal anymore.

[shawnmd]

Found two problems, bad ground and the red high beam wire had a connector installed in the middle of the wiring harness that let go.  Its no fixed.  Thanks