110 VAC Loose Wire
It has been posted before but I think it is worth posting again. I noticed the 110VAC lights over the bathroom sink flickering (dimming out part way). I check the switch wiring and its wires were tight. I pulled the light fixture and those wires were tight. I pulled the face off the 110VAC circuit panel (Danger Will Robinson). If you are not comfortable and knowledgeable with 110VAC get a professional because it can kill you. I found one of the 50amp service lead screws loose by almost a full turn. Tightening it up cured my problem.
That loose screw can cause arching, that was why the lights were flickering.
So, if you notice 110VAC lights or 12VDC lights flickering do not put it off chase it down.
Good luck and safe towing.
Cheers,
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