Installed a FRPP Tach Driver in my '02... used the install method that came with the unit. First, I located the CKP sensor...
then, tapped into the appropriate wires...
and found a cozy place to mount the box (used indutrial-strength Velcro).
Then, it was simply a matter of running the wires through the firewall behind the dash, and hooking them up to my shift light. Not a complicated process at all, really...