Mjm434mrgn Report post Posted July 29, 2022 I have a 2005 Alfa See Ya, with some electrical problems. Looking a manual or anything that would show the wiring diagram of a motor coach. Something in book or manual form. I have the service manual and it helps, but I need something in more detail so I can follow the wires thru the coach. Having trouble with exterior lights ,porch and market lights, generator problem. can't get enough voltage to dry doc. frigerator not working, thanks, mike I even believe any general class A motorhome wiring diagram book or manual would help. Share this post Link to post Share on other sites
ianbullock Report post Posted July 29, 2022 Sounds like you may have a dead converter or dead batteries....all systems you mention rely on 12 volts... Share this post Link to post Share on other sites
rayin Report post Posted July 30, 2022 FWIW, over 80% of all 12V issues are the result of a poor/missing ground. That is a 12V battery circuit issue, as it involves both chassis and coach 12V lighting. Each MH mfgr. has their own methods of running and controlling 12V circuits, I doubt my Winnebago wiring diagrams would help with an Alfa MH but you may look them up from https://www.winnebago.com/Files/Files/Winnebago/Resources/Diagram/Wiring.htm Share this post Link to post Share on other sites
Mjm434mrgn Report post Posted August 20, 2022 Wow, I look up the Winnebago wiring diagrams and they have every vehicle for the last 20 years, thank you for the help "RAYIN" I just go to find one that matches closely with my 37 foot Alfa. Mike Share this post Link to post Share on other sites
