Drop axle controls

How is the trailer set up? Does it have the regulator on the trailer or do you need to add the regulator to your truck? Is it an electric solenoid or and air solenoid to raise and lower? If the regulator is on the trailer and it's electric. Then you just need a power wire for each axle wired to a switch in the cab. If none of that is on the trailer, then you will need to add a regulator to control air pressure to the cab, as well as air switches for raise and lower if it's an air solenoid.

I'd like to believe the regulator is on the trailer so you just need to find out if you need an air switch or electric to raise and lower.