I don't know why Ford only supplies a 4 pin spade connector - the extra one is only used when you need it. Instead you need to use this product which connects a round 7 pin adapter to a 5 pin adapter that includes a hydraulic handbrake release when reversing. This does NOT apply to electric trailer brakes.
Heavy Duty Wheel Arch Roller Flaring Former For Automobile Maintenance - Goplus Fender Roller Reforming Tool (Blue)
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𧲠MUTUACTOR 2Pack 100lb Anti-Scratch Neodymium Rubber Coated Magnet: Versatile Magnetic Base for Off-Road Vehicle Lighting, LED Working/Signal Lights, Antenna, and More!
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