Kevan H Posted March 26, 2023 Share Posted March 26, 2023 Hi All, I previously posted an enquiry about my 12 volt electrics on my Motorhome which was answered with some very useful suggestions. I had a fault with my bathroom light and when I took it out to check it over everything seemed OK, I replaced it and all the power came back on. Unfortunately when I went back to it, the power had gone again. Once more I went through all the fuses and connections, I could not find anything wrong and I have power up to my switch panel which is showing the battery is fully charged. I would appreciate any feedback on this that anyone can give me. Summer is coming and I want to get back out on the road. Many Thanks, Kevan Link to comment Share on other sites More sharing options...
Labby Posted March 26, 2023 Share Posted March 26, 2023 I think the problem may be with the EMC relay which shuts the power supply off from most of the 12v fused circuits when the engine is started, I do not know its location on your Motorhome but if you can find it , it may be near the habitation fuses , or the distribution panel. If you can locate it , it should be able to be by-passed to confirm if it is the cause of the problem The relay may have a brown/red , brown/yellow a white/orange , a red/slate and a red/yellow wires going to it. Link to comment Share on other sites More sharing options...
Kevan H Posted April 5, 2023 Author Share Posted April 5, 2023 Hi Labby, Very sound advice and I have located my EMC relay. My problem is I have no idea how to bypass it, do I have to do it wire by wire or is there some other way of going about it? Once again many Thanks for your advice. Link to comment Share on other sites More sharing options...
Kevan H Posted April 5, 2023 Author Share Posted April 5, 2023 Hello again, acting some very good advice from Labby I located my EMC relay and rather than bypassing it I replaced it with a similar one and "surprise" all my 12 volt electrics came back in my habitat. Can anyone out there tell me why the relay would have gone in the first place and how do I stop it happening again. Many Thanks, Kevan Link to comment Share on other sites More sharing options...
Labby Posted April 5, 2023 Share Posted April 5, 2023 Kevan H , Glad to hear you have your 12v back , If your 12v electrics had worked with a relay power by-pass it would only have indicated that the relay was probably faulty and needed replacing , as you have done , the relay may have been the original and the power contacts etc inside it worn out/burnt due to age causing it to fail. Link to comment Share on other sites More sharing options...
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