if all goes as planned, ill be towing home a 07 puma in the next week or so. my tow vehicle is a 1978 ford bronco. wiring for my current boat trailer is a flat four plug… white, brown, yellow, and green wiring. on the puma trailer, there is a fifth (blue) wire. looks like ill be needing a flat 5 connector for the puma trailer, but im not sure how i need to be getting power to the blue wire. from what i understand, this wire controls the reverse lock out and/or surge brakes? can anybody tell me the whats and hows of what ill need to do in order to get that blue wire hooked up and functioning on my old timey truck. thanks!