I just traded my prerunner in for the 2002 4x4 TRD model and found that this one doesn't have the towing package. Not a big deal since I have the receiver hitch and plug from the other truck. the problem is in the wiring. Every other vehicle I have had before has the wires handy. green, brown, yellow, and white. On my truck there is a bundle of wires, one thick white with a blue or black stripe, one thin white with a black stripe, one red with a black stripe, and several green wires with different color stripes. 8 total wires. So which one do I splice into for my green, yellow, brown, and white from the plug?