Your best bet is to rewire the trailer for 4-wire. You could disconnect the red wire from one side and run a new wire back to the brake filament on the disconnected side, or you could disconnect the red wire from both brakelights, the move the yellow and green to the brake lights on each side.
Actually, BRP did run the extra wires. Somewhere along the line they changed, probably to make their trailers more adaptable to other brands...or possibly to address a problem with blown trailer modules on some earlier 2010 Spyders. The 2010 Trailer Tongue Harness was seven wire, and was readily adapted to a 5-wire trailer. The original setup with separate right and left brake and turn wires was very handy. By splitting the brake wires on a 5-wire trailer to make it 6-wire, it could have a 4-wire connector wired in to use it on either the Spyder as 5-wire, or on a 4-wire tow vehicle.
That is good to know...thanks. I assume you mean a high-end tool, and not the houshold wiring variety.
From what I have seen of the Deutsch connectors and crimper, a crimper that fits the pin diameter closely, and crimps an indented or inverted pattern is standard. For reliability I would stick to the Deutsch crimper (or equivalent) or solder the pins. A plain crimp will likely fail in time.
