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post #11 of (permalink) Old 20th August 2007
Technical Supremo

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THe connector for the caravan internal electrics has to be controlled via a relay which only permits current to flow when the alternator has reached a certain output and the car battery is fully charged. In other words it must be wired in a way that the car electrics and the caravan external lights get priority - it could be down to a fault in this sytem. Additionally the car electrics are monitored for load and resistance so any fault in the lighting system may show up as a warning.

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