Electrical 67 Mustang Won't Turn Off

[Rmoore45]

67 mustang with a 289 and original wiring harness will not turn off with the key. I replaced the ignition switch and the starter solenoid. Any ideas? I'm working on removing the wiring harness and figuring out the problem but any thoughts would be appreciated

 

[horse sence]

are you running a single wire alternator ? one without a diode will keep running
when the key is turned off ,found that out on my ski boat.

 

[Rmoore45]

Ended up being the starter solenoid, the I side of the solenoid was hot all the time. I thought I ruled that out when I replaced it a week ago. I didn't need to remove the gauge cluster, a/c duct work, and a good portion of the wiring harness . Now to put it all back together

 

[Rmoore45]

Put everything back together and everything works! My baby is back on the road again. Also fixed a few things while I was in there like a/c duct work and wires that had 3 butt splices etc.