ruizrvnyc Report post Posted August 12, 2020 Hello. I have a '91 Itasca Windcruiser. The other day I went to go start my RV and the starter battery was dead. I attempted to use the "MON" switch on my dash that combines the house batters and jump start the RV. It started to crank over but then stopped. The button did not work when I attempted to use it again. I was able to get the engine started with a different jumper/charger. My issue is now I am no longer getting 12 volt power to the coach. The aux battery switch does nothing. Even when I plug into shore power, I get no 12 volt power. The solenoid that use to click when I pressed the rocker switch no longer clicks when the engine is off. It does click on, however when I have the key in the "on" position, and flip the switch to have the alternator charge the house batteries. As soon as I turn the key off, I loose all power to the coach. I replaced both fuses on the solenoid itself, I check every fuse on the chassis fuse panel and made sure every 12 volt breakers were not tripped. Thanks in advance for any help you can provide. Share this post Link to post Share on other sites
jleamont Report post Posted August 12, 2020 ruizrvnyc, Welcome to the FMCA Forums! Do you have a volt meter? You will have to locate the solenoid that controls the battery boost switch and test it, and the coach house switch solenoid (salesman switch solenoid). You should have the same voltage across both large lugs. If not you will need to test the small pins for power and ground when the switches are activated. Share this post Link to post Share on other sites
