Trailer plug power

[Dave Haddon]

Hi.. sitting with mangled foot and thinking about a future project of powering a light to the 7 pin hitch light plug. Currently the light is plugged into the trailer hitch plug . I want to tap into the power wire of that hitch light plug behind the bumper.
Anyone know on the 2021 Ram Classic DS 1500 what power and neg wires I can tap into? Lost my power indicator probe.
Anyway if anyone has time just to drop me a line while my foot mends .. it would give me something to visualize.. cheers

 

[Dave Haddon]

Think I found a diagram.. blue is ground and power is red.. is that correct ?

 

[Dave Haddon]

Oops ground is white.. duh

 

[hunterdan]

Hi.. sitting with mangled foot and thinking about a future project of powering a light to the 7 pin hitch light plug. Currently the light is plugged into the trailer hitch plug . I want to tap into the power wire of that hitch light plug behind the bumper.
Anyone know on the 2021 Ram Classic DS 1500 what power and neg wires I can tap into? Lost my power indicator probe.
Anyway if anyone has time just to drop me a line while my foot mends .. it would give me something to visualize.. cheers

Are you trying to tap into the reverse light, or all of them? Because there are adapters to make it all plug and play... Like this one.. converts to a 5 pin flat, so you'd have turn, brake, running and reverse. Just remove the harness off the back of the 7 pin and plug this in line. Retains all functions at the bumper plug, but gives you an an extra 5 pin to use. Just wire up your hitch light with the wires you need to a 5 pin male. Like I said, it'd then be 100% plug and play, no splicing needed.
Oyviny 56584 USCAR 7 Pin to 5 Pin Trailer Wiring Harness for Installing LED Tailgate Light Bar with Reverse Lights, USCAR Socket to 5 Pin Adapter https://a.co/d/gQWgUyT

 

[04fxdwgi]

Ground is White
Battery + is Black
Reverse / Aux is Yellow

Also, if you have a 5 pin FLAT connector, the pin furthest from the ground is also the Yellow / reverse (used for boat trailer disc brakes).

 

[BossHogg]

Think I found a diagram.. blue is ground and power is red.. is that correct ?View attachment 536074

Careful, the color callouts are for the typical wiring harness that comes with trailer items like a light kit. I don't know what color the wires are in the RAM harness that feeds the 7-pin socket.

 

[Dave Haddon]

Thanks guys..to be clear I currently have the little lite sitting in the hitch receiver and flat plug plugged into the trailer hitch plug on the truck. I just thought it better to not have that trailer hitch plug exposed to the elements the way it is because of that flat plug insert. SO thought i could tap into power for that little Ram light up behind the bumper somewhere on that hitch plug harness..hope that is kinda clear..thanks..here's a pic of the set up