M105A3 12V conversion questions

[mike mck]

Picked up a M105A3 as a cargo trailer for camping trips.
1999 F550
1994 Caribou cabover
2003 M105A3


I want to change lights to 12V. I don't want to make any changes to the wiring. I have been told I can swap out the bulbs for 12V LED bulbs. Then of course I need an adapter from Military plug to the 7 pin on my truck.

Anybody done this? If so any recommendations where I might find an adapter?

Thanks in advance for any and all input.

 

[bigboy44]

I spliced into my wires back past the trailer plug whip, any auto parts have the little connectors that you can easily splice the wire into the existing wires. The 22-460 is RT,(Green). 22-461 is LT (Yellow). And the 21-489 is the running lights(Brown).