96 GTX is a 3 wire system with lake water temp, the 00 XP is a 2 wire system w/out water temp. However, they use the same internal components electronically(actually magnetic inductance) speed sensor system so it will still work. The tan wire is the water temp signal, so you won't hook that one up, the purple/yellow and black wires will match. You actually got lucky, a 95 gtx 3 wire system is completely different.
Better to be lucky than good, I guess.