Be sure to check out ETRAILER.COM They have those and will most likely have a video on how to install it...
Just keep in mind if you pull the key while you are working on it, it will run down your trailer battery rather quick. Each Electric Brake coil will draw a solid 3AMPs when hit with 12VDC per installed electric brake unit.
That would be 6AMPS total for a single axle and 12AMPS for dual axles...
This also is not a good idea to have the electric brakes engaged for any length of time as it may burn out your electric magnet coils...
Pull the battery negative frame terminal when working on your electric brake system.
ALso if you have never pulled the key before it is a rather tight pull to get them out as well as putting them back in. The plunger is also keyed in one direction... Got to push rather hard to get it to engage the spring loaded key lock.
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS