I bought a deck lid release to install in my 72 Supreme convertible. It has all the wiring to run from the glove box to the deck lid release, and to hook into the glove box lamp for power.


Does a factory harness already have the wiring to hook this up? They never made but one harness that runs to the rear, did they. Most cars I have dealt with all have the wiring there and just needs plugged in. Power seat, clock, tach, cornering light all just need the accessory to plug into the harness. Do I need to run the long wire, or is it part of the harness?

 

The power trunk has an adapter wire that feeds off the glove box light. Yes, you need to run that wire to the back. The only other wire that ran down that side of the car was for the rear speaker, and it has a separate connector off the fisher body lead.

The 1972 Cutlass Fisher harnesses were identical (with exception of the cars with rallye pac) so you'll have no trouble doing a plug/play with that kit/adapter

 

It looks pretty straight forward, but I didn't want to string a wire from front to back if it was already in the factory harness.

 

The only lead I'm aware of in the factory harness that runs power to the back of the car (not including connector to rear trunk wire harness) is the orange wire for the trunk light. But that lead is on the drivers side main harness. The PT wire would run along side the purple (rear defog) and blue (rear speaker) wires on the passenger side. The factory used a special kind of tape to protect those wires. I've tried peeling that stuff off after 40 years and it's next to impossible, but the wires were like new underneath!