I'm hooking up my shift light to my '01 9r. My problem is I hooked it to the tach signal at the back of the instrument cluster and she's no go.

It's a standard, hook to the neg side of the coil shiftlight. I'd rather not splice into the coil wires to the stick coils if I can help it as resistance changes can damage them.

Anyone got any ideas why this isn't working?