Problem with 12 volt electrics
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Caravan Facts -> Tech / Mech Chat

#:  Problem with 12 volt electrics Author: OvingtonbongoLocation: Norfolk PostPosted: Mon Sep 16, 2013 7:58 pm
Sorry if this one has been asked before but I couldn't find symptoms like mine. We are going away at the end of the week in our 2008 Elddis Crusader and I went to the storage site to fit a new fully charged 110ah battery. The van is not on EHU so I wanted to check the 12 volt electrics. Everything seemed to work at first but then I noticed that the battery charge display meter (CBE) was flickering i.e. on/off. The flickering was constant and seemed to coincide with a sort of clicking noise form the under locker fuse panel.

I then lost the 12 volt altogether so I checked and ultimately replaced all the blade fuses but with no effect. Checked for loose connections and anything else I could think of. I have read that it could be the battery charger, power supply unit or even a fuse in the positive supply cable to the battery (which I can't find). I wondered if the clicking noise was relays behind the fuse panel. If so are they repairable?

I can't get my dealer out to look at the van until we get back back so my main question is this. Can I get 12 volt electrics i.e lights etc when I go on EHU on site i.e. bypassing the 12 volt from the leisure battery.

Thanks in anticipation.

#:  Re: Problem with 12 volt electrics Author: RobNorfstarLocation: North Yorkshire PostPosted: Tue Sep 17, 2013 9:13 am
Could be relays or thermal cutout on battery charger.

To run direct from the battery you will need to bypass the charger.
If the lights have 1 fuse then you have one circuit (probably similar to a domestic ring main) You will need to connect your battery into the wiring circuit AFTER the charger & BEFORE the fuses (for protection) Best to isolate the charger so that you do not back feed it.
Your main problem will be finding somewhere to break into the circuit, electrics are often in awkward places.
Bear in mind that many of your appliances, even when on gas or mains, need a 12v supply so you may need to collect them in as well. If you are staying any length of time you may need to charge the battery so take a battery charger with you. Disconnect battery from caravan when charging so you dont damage any appliances.
Alternatively, take some 240v lights & use them. Hope this helps, if stuck you can call me on 07870425215

Caravan Facts -> Tech / Mech Chat

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