Sorry but a wiring diagram doesn't exist.
You might try asking in the Sandstorm sub-forum. But you should post which model number you have.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package