I just drilled wholes for the wires to go threw the dash and mounted the shift light that way. i drilled the whole so the wires would drop threw the dash, from looking under the passenger side you should see them droping threw. Then under the driver side dash there is a plug on the fire wall. it houses a bunch of wires going threw. its kind of behind the gas pedal. i just used a clothes hanger and pooked a whole and pulled the wires threw. dont be lazy and run them on the outside, like between your door and then behind your side fender, all thats asking for is trouble. so i would deffinatly go threw the firewall. Good Luck!!! you need any more info. or do you need anything explained better just haller.