Crash, I assume you have an LE? My base model has lights on dash for "Park" "4WD" & "Temp" only. I would imagine the pigtail should be the same for Base or LE models. My pigtail did work for Rev Lite, but it doesn't always work. I heard on another thread, that the inconsistency of operation is the result of the ground going to the frame & causing a short. It would seem, logically, to me that if that's the case the lite should be on regardless of gear shift position or off all the time.....not intermittently like mine is. Apparently electricity never studied logic though. Meanwhile, is the wire you are referring to accessed by removing the center console?