Like the title says does anyone know how to do this?

Thanks

 

Gray wire with purple stripe in driver's side kick panel.

 

Is that the same as the courtesy lights?

 

so just tie those two wires together?

 

Do NOT connect them together; at minimum you'll blow a fuse if you're lucky.
You'll need to use the gray with purple as the trigger on a relay for the reverse lights and a diode to prevent feedback to the reverse light circuit

 

How do I wire a set of aux back up lights under bumper to come on with reverse lights ?

 

Tap into the reverse light wire on the trailer wiring harnes (center pin IIRC on the 7 wire) and ground it to the chassis. Should be an easy job. I just installed the RECON "lightning bar" on mine and it took a hour or so. I took it easy and soldered the connections as well as taped it up well. A set of lights should be easy ... hardest part would be mounting them depending on the type you buy. The cap of the 7 pin connection will tell you which wire to use.

Hope this helps.

 

Here's the correct way.

https://www.f150online.com/forums/ar...-how-pics.html

This offers the ability to independently control the lights.

Also - depending upon the lights chosen, this appraoch will ensure you don't exceed the current capacity of the trailer wiring harness. Some folks run 2 X 50w halogens for aux lighting - the 7-pin feed is not the way to go. It can be used, however, to trigger a relay that is fed from a more robust source.

MGD

 

Just saw date on this post will start new post...