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could you remove the light fittings?

if they will come out make up a small loom and check the light fittings direct to your battery, this is what we do at the garage and i dont think cars and caravans are different

Quote: Originally posted by Apes on 22/5/2011

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However when I use the volt meter across the pins of a light fitting I get a 12.4v reading but no continuity sound.

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to test take it through another 12v bulb and holder.ie.bench test.

Very silly set up though!

no it was a simple set up those days.

Quote: Originally posted by lee99780 on 23/5/2011

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... This would explain no continuity sound as there isnt enough current flowing down the wire.

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You need to test the continuity at either end of the same wire, that will indicate a break in the wire or no resistance, not across both connections at the socket. You can test the voltage at the socket, it might show 12v on a multi meter but not enough ampage to light a bulb..