Or why not make your diy installation easier with our 'plug and play' solutions. Our trailer wiring diagram is a colour coded guide designed to help you wire your trailer plug or socket. But wiring a trailer may not be easy.
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15 5 Wire Trailer Plug Wiring Diagram. Wiring trailer lights is not as difficult as most anticipate. An extra pin allows using another extra function. On a 5 wire system all lights have a ground wire that follows the harness to the plug. This is a basic reference article about trailer and caravan wiring;