Mine is an '03, which according to the instructions should be the same as the '01 regarding the fuel cutoff wiring. According to the instructions, the Red/White wire on the Digi-kill should connect to the yellow/red wire coming FROM the harness, and the White/Red wire on the Digi-kill should connect to the yellow/red wire going TO the injectors. In other words, first locate the injector harness. I snapped a pic of what I'm thinking is the correct harness (found under the tank near the fuel rail):
The yellow/red wires are connected via the harness. What I plan on doing is snipping the yellow/red on each side of the harness, and connecting according to the instructions. So after wiring, the harness will have the stubs hanging. Instead of the signal going straight to the injectors, it goes thru the Digikill instead.
I didn't have time to get that far tonight, but that's what I'm planning on doing tomorrow night, after looking around a little more.
Hope that helps...