Winnebago, F53 Dim Low Beams only
We have a Winnebago Sightseer on a Ford F53 chassis. It has a four sealed beam headlamp system with H4651 single filament halogen hi-beams and H4656 dual filament combination halogen high/low beams. I...
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You most likely have a poor ground for the headlight circuit. The easiest way to find out is to disconnect the plug and follow the wire to the ground stud. The ground studs are generally welded to the frame or a frame support member. They are rarely if ever painted or otherwise coated after welding so they rust rather quickly. The rust acts as an insulator, reducing the current flow.
If you can't easily find the ground stud push another wire into the ground terminal on the socket and run it directly to the negative post of the battery. If you have an improvement in the light output you'll know what needs to be done.
It'll probably take 10' to 15' of #14 wire to reach the battery. It'll cost a few bucks for the wire, but it will certainly let you know if there's a ground problem. As a side note a poor ground is the most common reason for poor or inoperative lights on any motor vehicle.
If you can't easily find the ground stud push another wire into the ground terminal on the socket and run it directly to the negative post of the battery. If you have an improvement in the light output you'll know what needs to be done.
It'll probably take 10' to 15' of #14 wire to reach the battery. It'll cost a few bucks for the wire, but it will certainly let you know if there's a ground problem. As a side note a poor ground is the most common reason for poor or inoperative lights on any motor vehicle.
