No lights on battery?

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bibidily
Posts: 7
Joined: Mon Nov 02, 2020 9:25 am

No lights on battery?

Post by bibidily »

Strange electrical issue and need help to diagnose?

On shore power all 12v circuits work. The radio has a hum that isn’t steady... it tends to pulsate. Some times the hum is worse than other times. At first I thought it was just an old radio?

If I disconnect from shore power the radio hum disappears. On battery only the radio and 12v receptacles have power. All lights and fans do not work.

I have checked ground on chassis and on all grounds at 12v fuse panel. All good.

I have checked 12 v power at all fuses. All good.

The one thing that I question is the dimmer for the overhead light. The owners manual says it is push on/off.... or twist to dim. And that the dimming function will not work on battery.

My dimmer does not have a push on/off function, only twist. Possibly replaced by a PO? Only 2 wires are going to the switch.

Does any one have a more detailed wiring diagram, or understand how the original dim switch worked(assuming mine was replaced). Any help is much appreciated.

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76 legrande 31ft
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