Running lights not working, no power

Want2getaway

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Jun 18, 2025
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2015 Thor Majestic Class C The running lights along the top are not getting power. Looking for a schematic for electrical system. Any suggestions?
 
At the base of the dinette, near the floor, there is a panel. Push the top and it will flip down. To the right of the breakers and a series of fuses. Check the 3rd of 4th one down. Should be a blue 15 amp fuse. You may see a red light beside it indicating it's cooked.
 
At the base of the dinette, near the floor, there is a panel. Push the top and it will flip down. To the right of the breakers and a series of fuses. Check the 3rd of 4th one down. Should be a blue 15 amp fuse. You may see a red light beside it indicating it's cooked.
Wild goose chase.
Running lights are part of the CHASSIS electrical system
This post steers you to the HOUSE Power Center which has nothing to do with running lights.
 
I would start at the front check each light wiring I’m guessing bad ground unless you can see water damage on one light then start there
 
The overhead marker lights were added to the chassis' parking lamp circuit by Thor. Before doing anything else, observe and report how the rest of the parking lights are operating. Front and rear corners, any side markers, etc. Need to determine if the problem is isolated to only part of the lighting circuit or if the whole thing is dead.

Also, include the FLOORPLAN of your motorhome so it is accurately identified and the correct diagrams can be accessed.
 

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