Electrical Problem 2000 Monaco Windsor

[toger3950]

Anybody ever have this problem? If coach lights are turned on and you start the engine all of the chassis lights go off. Head lights. running lights, horn, smart wheel ! Coach lights are good and appliances and slides work! I thought it might be the ignition switch but changed it and still no luck! Any ideas?

[RV Wizard]

Hello and we are glad to have you join us here and we look forward to reading of your adventures and experiences. I am sure you will enjoy our website and forums. Good luck, stay safe and keep us posted.
You devinitely have a breakdown in the chassis 12 volt. Start with verifying a good ground and battery negative connection. Then start at the chassis battery and do the same thru the chassis battery disconnect; checking for voltage drop at each component down stream. You should get to the front driver compartment where you will be half way through the feed circuit. Let us know what you find.

[twinboat]

If the engine starts, when the lights go out, it may be normal.


If it don't start, then turn the key to start for a few seconds, then feel the battery terminals for one hotter then the other. If you find a hot one, clean them all. Do the same thing to any cables leading from the battery to the starter.


Good Luck