Left headlight is dim

A dim light usually is indicative of a poor ground. First, since the high beam on the left isn't working, are you certain the bulb is good? Next, I attached two pics below. I need you to check both fuses indicated.

If the fuses are good, check that the black wire from the socket has a good ground. See pic 3 for ground location.

Here are a few links you may find helpful when testing:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

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Let me know what you find.

Joe

Hi Joe. thanks . i checked the fuses, all are good. not sure about the ground. i disconnected the main ground from the battery. can't seem to find the ground from the light. would it be grounded to a bolt or screw on the fender?

Hi,

Yes it should be screwed to the body. If you can't find it, simply run a jumper wire from the light socket ground directly to the battery negative to see if it chances things. If it does, then we know the problem.

Let me know.

Take care,
Joe

Okay, lack of a jump wire used a test light. didn't change the anything but it did light up. is that weird ?

No, the light should have turned on because you are completing a circuit that is part of the power supply.

I need you to try to use a jumper wire. The light itself can cause resistance when testing. Although a good idea, the test light may not do what we need. Make sure you are on the ground wire at the socket.

Joe