72 Gran Torino Ignition Cylinder/Wiring issues.

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   Hey everyone! John here, proud owner of a 72 Gran Torino Sport - Project car! Little background, fixed up some farm equipment and picked up the car as payment. A couple of kids had tried to Hotwire it once upon a time and jammed a screw driver into the key slot. 
FF to now, she’s sitting in my garage instead of the field, and I have replaced the ignition cylinder. Lock position, everything is off, I turn to stage one, I get the ignition buzz letting me know the key is in the ignition and the door is open, stage two shows the ALT light on the dash, and when I turn the key all the way, nothing happens. There is a large clip of multi-colored wires hanging from under the dash, and a single red and brown wire that have been removed and are free hanging down below. I have a simple wire harness but can not seem to identify which wires are here.

I have no headlight response from the puller, but dash lights, interior lights, and radio all power on. Any insight on where I should begin troubleshooting would be amazing! Thank you all, and happy to be here. 

Update to the testing. With the key in the start position, I get 0 voltage to the starter solenoid. I assume one of those wires that’s been disconnect has something to do with that. 

Edited by Coloradoino - 23-March-2024 at 3:05PM

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Coloradoino Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 23-March-2024 Location: Colorado Status: Offline Points: 2	Post Options Post Reply Quote Coloradoino Report Post Thanks(0) Quote Reply Topic: 72 Gran Torino Ignition Cylinder/Wiring issues. Posted: 23-March-2024 at 2:34PM
	Hey everyone! John here, proud owner of a 72 Gran Torino Sport - Project car! Little background, fixed up some farm equipment and picked up the car as payment. A couple of kids had tried to Hotwire it once upon a time and jammed a screw driver into the key slot. FF to now, she’s sitting in my garage instead of the field, and I have replaced the ignition cylinder. Lock position, everything is off, I turn to stage one, I get the ignition buzz letting me know the key is in the ignition and the door is open, stage two shows the ALT light on the dash, and when I turn the key all the way, nothing happens. There is a large clip of multi-colored wires hanging from under the dash, and a single red and brown wire that have been removed and are free hanging down below. I have a simple wire harness but can not seem to identify which wires are here. I have no headlight response from the puller, but dash lights, interior lights, and radio all power on. Any insight on where I should begin troubleshooting would be amazing! Thank you all, and happy to be here. Update to the testing. With the key in the start position, I get 0 voltage to the starter solenoid. I assume one of those wires that’s been disconnect has something to do with that. Edited by Coloradoino - 23-March-2024 at 3:05PM

72FordGTS Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 6780	Post Options Post Reply Quote 72FordGTS Report Post Thanks(0) Quote Reply Posted: 26-March-2024 at 12:11AM
	Welcome! Have you checked the ignition switch mounted on the column to see if all the wiring is properly connected? It might be worthwhile to make sure the switch is not corroded or shorted out.
	Vince 1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin

Coloradoino Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 23-March-2024 Location: Colorado Status: Offline Points: 2	Post Options Post Reply Quote Coloradoino Report Post Thanks(0) Quote Reply Posted: 28-March-2024 at 9:22AM
	So this is what I have below my steering column. The red wire was run to an afterthought oil pressure gauge. The clip does to a bundle under the dash. And the brown exposed wire come from that harness

Eliteman76 Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 20-March-2006 Location: Nebraska, USA Status: Offline Points: 5450	Post Options Post Reply Quote Eliteman76 Report Post Thanks(0) Quote Reply Posted: 17-September-2024 at 5:54PM
	I generally don’t step into the 77-79 stuff, on my phone otherwise I’d move this to the 72-76 section. As far as the wiring goes, any other pictures of the dash? I may have a couple dash harnesses I can sell, if your harness is chopped up bad. Any other pictures of the damage? The wiring connector that ties into the column is part of the switch assembly for turn signal
	Andrew:GTS.ORG admin, '72 Q code 5 speed Restomod Pondering: #99Problems

1973gts Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 05-March-2018 Location: Grand Rapids Mi Status: Offline Points: 720	Post Options Post Reply Quote 1973gts Report Post Thanks(0) Quote Reply Posted: 18-September-2024 at 2:15AM
	Two things to check, like Vince said the ignition switch which is located on top of the steering column can become defective causing the contacts inside not to make contact. I had this problem with mine and after taking it out and cleaning it it now functions properly (did a write up in the 72-76 section). Also, check the tach connection to the backside of the tach in the instrument cluster, I believe the tach has to be correctly connected for the ignition circuit to be complete.
	Dave - 1973 GTS N code