I've got a question regarding this 6-pin and 4-pin trailer connector, see the picture attached. I purchased this at autozone and as you can see it has the ground wire, red, and blue wires. The other 4 pin ends just plugs into the wiring harness. I assume these 3 wires are for a brake controller which I don't have. I only occasionally tow a friends trailer that has the 6 pin male end, but uses only the 4-pin since it has no braking assistance. Do i still need to install that ground wire?
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2002 Toyota Tundra TRD Off-Road Package
Mods: TRD Dual Exhaust, Clear Corners, Aluminum Skid Plate, 2005 Taillights, 2005 Center Console Mod, 10" Subwoofer in Rear Seat Console, blitzsafe iPod interface, Map Light mod, 1" Daystar Lift, Force Stainless Side Steps, Pirelli Scorpion ATR's on 17's, Fog Light Mod Parts 1 & 2C...hopefully more to come