i hooked it to my ignition fuse, the signal wire is easy..just run the wire to the front of the engine...you'll see the harness for the o2 sensor,find the white wire with the red line, tap into it,real easy

"Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but STUPID lasts forever."-Aristophanes. --93 pgt,headers,intake,borla=14.9 1/4mile