Looking for info on how to do a TC lockup switch on an 07 F350 6.0, I did alot of searching with no luck. I believe the TCC solenoid can be grounded out with a switch at ECM harness #3 C175c. PIN 13 TCC solenoid. Just use a single pole rocker switch and ground it out and solder it into the wire coming off of pin 13? Any body have any ideas about this?