Parts Needed to Tow a Trailer with Brakes with a 2015 F-550 Box Truck  

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For a 2" trailer hitch receiver on your 2015 Ford F-550 I recommend going with the Curt # C15445. This has a tongue weight rating of 2,550 lbs and a gross trailer weight rating of 17,000 lbs. If the weight capacity of your F-550 is lower than these ratings then you will be limited by the weight ratings of your F-550. Please note that if you have a box truck that sits further out at the rear you may have trouble using the receiver.

If you don't already have a 4-Way Flat connector then you will need the 4-Pole Hardwire Kit # 18252 which is a universal design and is used for the standard trailer light functions. The next step (ever if you already have the 4-Way) is installing the Hopkins # 37185. A no-drill mounting bracket like part # 18136 helps to make this installation a little easier. There should be some wires run to the rear of your F-550 that allow you to tap into the 12V power and brake controller output circuits.

To install a brake controller like the Prodigy P3 # 90195 in the cab you will just need the Plug-In Adapter # 3034-P. I am not sure if the P3 will fit in the same space that an OEM controller will fit, but I am attaching a photo with the dimensions that you can reference.

If the P3 won't fit in the same spot then you may be interested in the Redarc Tow-Pro Elite # RED44FR with Adapter # TM75270. You can install this controller so that the only visible part is the small control knob.

I am linking an installation video of the Prodigy P2 # 90885 on a 2008 Ford F-350 Cab and Chassis that you can reference for the installation.

expert reply by: Jon G

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