thanks for your reply G.B in wales I know ineed to attach in the boot but am unable to determine which colour wire is the power source for the reversing light also I assume other wire goes to earth thanks
you will have to access rear light unit wiring,select reverse with ign.on and get a voltmeter,earth black terminal and go a long each wire in turn until you get a reading of around 12v on the meter,that is the wire you plumb into
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