I am adding a Thunderbolt Lock deadbolt for my roll up door. This lock is designed to operate with the factory remote keyless entry, and as such, it needs to connect to the vehicle's lock/unlock wires.

Would anyone be able to point to a location where I would the appropriate wiring to tap into?

Appreciate any help, thank you!

 

Welcome!

Since the truck was originally supplied as a "cutaway" Ford usually had a connector at the base of the driver's B-pillar for use by the upfitter.

I don't have wiring diagrams past 2010 but I've attached a drawing of the 2010 "customer Access" connector in case it is of some use. Look specifically at pins 7 & 14 on the attached.

 

Thanks for your reply!

I did find that connector at the base of the B pillar, though mine has less pins/wires.

I was also able to identify one of the pins in that connector that gets 12v during a lock event, and another pin that gets 12v during both a lock and an unlock event, which wasn't helpful.

What I need is the pair of wires that reverse polarity during lock/unlock events.

 

You may have actually found the correct wires. Both of the wires you are looking for should be grounded when the system is at rest. One will rise to 12 Volts on a lock event and the other to 12 Volts during an unlock event in relation to each other. Instead of measuring the voltage from each wire to ground, measure the voltage (and polarity) of the wires to each other. That's what is important.

If you measure to ground, you might get incorrect voltages as the current flows through one of the other lock motors.

Also, remember that you will only see the unlock event voltages on the second key press as the first press only unlocks the driver's door.