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Originally Posted by fourfourto
As for the wire,use a positive wire(off accy plug or in the cluster to right of the wheel towards head unit )and use a relay to power it off a keyed power,the yellow wire going to the rear wiper switch works with the key fwd and back ,run it to coil side of relay use the 12v power wire on the other side.
The relay comes with a diagram.
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Sorry, need one wire only: the 12v red (in the engine compartment) leading to the hitch. The hitch is powered ALL the time. I need the relay inline with this red wire, and I do not want to put the relay at the hitch end. I have the wiring diagram for the relay. I have the Helm manuals. I have a butt load of wires in cable looms after running my roof lights, grille lights, reverse light, and rear fog light. Have a look through your Helm manuals, or have a look here for the
magical wire:
Steve - SanJose ... next time you are making happy snaps of your H3 could I trouble you to grab one of your engine compartment by the battery. Or do you know where your installer installed the relay for your HitchCAM?