it was a 14v model with a dead battery, so I gutted a battery and ran 12V wire into it. 1-80 to order Hopkins custom fit vehicle wiring part number HM40975 or order online at. Socket connects to your GMC Sierras OEM wiring system and mounts with included bracket. ![]() I run a power drill off my 7-pin to raise and lower the jacks. This 7- and 4-pole trailer connector eliminates the need for an adapter and allows you to tow a trailer with either a 7- or 4-pole plug. OTOH, have full time power back there can be useful for running utility lamp, air compressor, etc if you build a 7 prong plug to go into it. You might be able to insert a relay inline merely by tapping into it with the fuse terminals. I'd probably just pull the plug at night when stopping. OTOH, leaving it in play also provides the benefit of an overnight charge to the truck if connected with the converter powered up, provided that the additional load on the converter charge doesn't pop the 12VDC fuse. ![]() ![]() You could trace the harness and insert a relay inline with the coil triggered off an acc circuit somewhere. Dodge Ram 7 Pin Trailer Plug DiagramThis item: Genuine Chrysler 56038366AB 7-Way Trailer Connector 7063 + Tekonsha 3020-P Brake Control Wiring Adapter. RAM (Random Access Memory) is Computer Memory that is directly accessible by the CPU. In my 2008 grand chero one had to reprogram the BCM to fire that relay to get power back there, or else it was a dead circuit, so the daimler/dodge family at some point had it switched. Order Dodge Ram 3500 Trailer Wire Harness and Connector online today. No matter what size trailer your vehicle pulls, the lights and signals must be fully operational to ensure safe driving for you on the road. Every factory tow connector I've known fed that terminal through a relay.
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