Friday, Mar 09, 2012 at 17:12
G'day Boo Boo
Is yours a genuine Dmax Towbar or one supplied by HR or other variety?
Under the back of your vehicle there should be two relays which click when you activate the central locking.
These swith on when ever there is a flasher signal come down either the Lh or Rh flasher. Both click when locking activated. It is the output of the relays which go to the Lh flasher, pin 1 and Rh flasher, pin 4 wires in the plug base on the tow bar.
If you have either of the mentioned side wires connected to the trailer electrics then something is wrong with your connections somewhere.
The two side wires, one goes to the earth wire of the plug base and the other end/side wire is designed to come from the black, to be earthed, wire of a reverse camera or sensor system.
So apart from the trailer system and the reverse sensor system having ot use the same earth wire in the plug base, this wire going to chassis earth, there should be no connection with the trailer wiring whatsoever.
Exactly which lights do you not have when the plug is in or out? Confused here.
From what I can work out regarding your lights the side wires are somehow connected to the trailer feed wires in the plug base.
As mentioned before, only one of the side wires is connected to earth, the common chassis earth and the other wire has nothing to do with trailer wiring.
Inside the plug base is a tiny reed switch which is designed only for very small milliamp flows. If somehow your supply or trailer earthing is going through this minute little switch it won't last long and the lights will again not work.
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