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Imnewhere

12v lights not working

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Hi, We are new to caravaning and have a 90's Fleetwood Colchester 1650/4. We have fitted a new leisure battery which willpower the pump but we can't get any lights to work, notlr the 12v socket. We've tried the fuses and the switches at the front panel

 Any ideas what we could try next please? Thanks, Ann

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There is commonly an inline fuse in the main feed from the battery. It is often pushed under the battery box out of the way.

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My 1997 caravan has a switch next to the door that switches off all lights (when going out). When that "master switch" is off,  none of the lights will come on no matter what you do with the rest of the switches. Could you have a front door lights master switch that's off? 

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We've replaced that. It was a 16a and we've replaced it with the same. Would that be right? Thanks. 

 

Thanks Jacobite, there is a switch but we've tried it both ways and nothing 🤔

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If your pump is working, it's unlikely to be the in-line fuse. Its supply would also be affected, in any sensible wiring set-up.

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Look for the change over switch that when in one postion charges the leisure battery whilst hitched and towing and the other position for when you are pitched up and use the 12v circuits.

 

Also there is the 12v master switch but I assume you've tried that already, but it can get confusing which is on or off position, so try that again.

 

Check under seating for any partially dislodged 12v relays that may just need to be pushed back in their base socket.

 

Also remember not all of your internal lights will be fed off 12v, normally the lounge corner fittings are fed mains  230v so don't get these confused with the ceiling lights which probably are 12v fluorescent fittings for a '90's model.

 

Obviously your leisure battery is connected correctly hence 12v pump working ok.

 

Did you check the 12v fuses with a continuity tester to prove they are good? (Set to OHMs scale or beeper once you touch the probes together momentarily)

 

Possibly you may have a faulty 12v master or change over switch too that a  mobile service engineer would diagnose and replace cheaply.

 

Good luck with it.

 

Edited by Signature

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Sounding really silly, but what is the 12v master switch? Is that the one on top of the battery charger? 🤔 Sorry, complete novices 😕

Also, none of the lights work on hook up either. 

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Sorted thanks 👍 Someone suggested removing/checking the wiring behind the main zig panel and there was a loose connection on the switch.

 

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