If you just paid a $1,000 to have lights installed and there are issues, doesn't it make sense to take it back to the place of installation/repair?
Without knowing the specific details of the installation, it is impossible to give a qualified answer. They will be guesses at best.
Here's my first guess: Have the battery tested to make certain it is good. Most auto parts stores (autozone, advance auto, etc...) will check for free.
2012 JD855D OPS Black Poly Roof, Deluxe Cargo Box, Front and Rear Protection, Power Lift, Front Hood Rack, Rear Screen (homemade), 800 Watt Inverter, 2500lb Winch installed in cargo bed, Front and Rear LED auxiliary lighting (4" square 27 watt), Front and Rear CV Guards, Koplin Side Mirrors