My New DVD,VCD,CD,MP3 WORKS: Marc3.2TT...read, semi-long>>>
Marc, this is for a 2k TT w/ Bose, don't know how much it's gonna help you. ok, I got the harness(item# 1207017840 from Crutchfield but I end up splicing into the wires and not use the harness because all the harness is good for is the 12v+, ground, and mem/batt(12v+). So I spliced the 3 wires into the car's wires. as for the speakers, in the 20-pin connector, there are 4 possitive speaker wires, RF(grey/white-covered in gold wrap), LF(green-covered in gold wrap), RR(red/white), LR(black-smaller of two blacks). connect all your (+) speaker wires from your aftermarket receiver to the corresponding wires, tape/pinch off all your negatives(dont need them). and in the same location where you find the 4 (+) speaker wires, there's a black wire(slightly bigger than black LR wire), and a brown wire. the brown wire is the (-) source for all the speakers, the bigger black wire is to turn the remote amp on so you can have sound. Ground the brown wire, and as for the bigger black wire, splice your power antannae wire from your aftermarket radio to it(should be solid blue or blue/white)