I spent some time this afternoon rewiring my back up lights. In the process, I found a red wire coming out of the harness in the same place that is an unknown. My back-up light wires are the proper color codes (lavender with red going into the switch, red with lavender going to the bulbs). The wiring harness in this location seems untouched by POs. The mystery red wire had a bullet plug on the end and it is hot when the ignition is on. Is it a plug for a transfer indicator switch?, front drive indicator light? My rear heater motor and fuel gauge wires are already connected and working so I have eliminated them.