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Discussion Starter · #1 ·
Think I know what is wrong, not my car. Drivers side on low beam glowing very low level.

Sketched diagram of likely issue. filament #1 is low beam, #3 is high beam. Gray line is grounded at the HL switch.
Red is hot at all times, fuse by the battery. Purple is backfeed. Three filaments in series.
Likely fuse blown, bad connection, wire broken.
My will look at it when daylight and warmer.

Any comments?
 

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Discussion Starter · #5 ·
What was your resolution Chart?
Guy gave the car to his brother who has cancer, lives alone, and only needs transport to doctor and grocery. He will not drive at night.
On the good side, both filaments are lit, low bright, and high dim, and both filaments on the left are lit at low level.
Bulbs have common ground, left side first and across to the right. Ground cannot explain.

If I had a Bull in my drive I might pull a fuse and see what happens. But with 3 Bulls, none in my drive. Two grandsons and my daughter. After first of year, one grandson flying to a intern job.
I will get my wagon back.

For now only a Buick. Near urgent repairs last night. Thanks to a shop and a friend fixed in couple hours.
-chart-
 
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