rqpretired Report post Posted August 7, 2013 We just purchased a 1999 Winnebago Adventure and it appears that everything works when connected to shore power but as soon as we disconnect, everything is dead. I have cleaned all battery terminals and they are fully charged. The box where 110 volts enters the coach contains an electric switch that one would think, should click over to 12 volt when shore power is disconnected but nothing happens" no sound"of it clicking over. What am I missing.......Help Pretired Share this post Link to post Share on other sites
dickandlois Report post Posted August 7, 2013 Pretired, Welcome to FMCA ! When you mention everything works works when connected to shore power, does that include the AC Unit(s), refrigerator, and the 12 volt lighting? Should these items not be working the only thing that would prevent that would be the lack of 12 volts from the DC fuse panel. From your post it sounds like you loose the 12 volts as soon as you unplug from shore power. Is the disconnect switch for the 12 volt supply turned on? Some coaches require a switch to operated manually to get 12 volts supplied to the buss when not connected to shore power. Rich. Share this post Link to post Share on other sites
rqpretired Report post Posted August 7, 2013 Thank you Rich I am unaware of a disconnect switch for a 12 volt supply. Where might I find such a switch? Pretired Share this post Link to post Share on other sites
wolfe10 Report post Posted August 7, 2013 Normally near the entrance door. Share this post Link to post Share on other sites
rqpretired Report post Posted August 7, 2013 I have located a small unidentified switch that was hiding under the counter extension at the entrance but unfortunately it did not solve my problem. I still have no active 12 volt system after i disconnect from 110 shore power. pretired Share this post Link to post Share on other sites
dickandlois Report post Posted August 7, 2013 Pretired, Take a look at this link. Select the year and model of your coach and download the wiring information. the information should lead you to the area of the switch and give you the wiring circuit(s) covering you 12 volt system. http://www.winnebagoind.com/diagram/Wiring.htm Look the information over and let us know how you are doing and get some additional help if needed. Rich. Share this post Link to post Share on other sites
kaypsmith Report post Posted August 7, 2013 Pretired, Most lights in coaches are 12 volt, and some other operations, such as your camper style refrigerator. If all of these go out when unplugged from shore power, but work when plugged in, then the 12 volt must be working on the 12 volt converter. If you crank the coach, do any of these items work then? There should be two sets of battery/batteries. One battery or sometimes two batteries for the coach to crank and run. Now that said, there usually on most coaches is, another set of batteries, this is for house use. These are not normally in the same area of the coach as the battery used for cranking the coach. As Rich suggested, find a manual, if possible, for your model coach. Knowing what I have described above, you should look for house batteries, versus chassis batteries. I hope this tidbit will help relieve any confusion about the 12 volt wiring. Kay Share this post Link to post Share on other sites
rqpretired Report post Posted August 8, 2013 Thank You Rich & Kay for your knowledge and assistance.................. problem solved Pretired Share this post Link to post Share on other sites
rossboyer Report post Posted August 8, 2013 What was the solution? Share this post Link to post Share on other sites
KRAMZETROC Report post Posted January 5, 2014 I NEED HELP FINDING MY CONVERTER ON MY RV Share this post Link to post Share on other sites
wolfe10 Report post Posted January 5, 2014 I NEED HELP FINDING MY CONVERTER ON MY RV Welcome to the FMCA Forum. Please tell us what coach you have-- that may help. Share this post Link to post Share on other sites
