Ensure that the towing vehicle's tow bar is in good condition.
Check that the ball head cup is well greased.
Raise the coupling head above the tow ball by using of the jockey wheel.
Position the tow ball under the coupling head, then using the jockey wheel, lower the coupling head onto the tow ball whilst holding the coupling head open. Once the two parts are correctly engaged, the coupling head handle will lock in the closed position. Twist the coupling head and check that the trailer is properly coupled.
Wind the jockey wheel upwards until fully retracted and the top handle is tightly locked - now loosen the main clamp and raise the jockey as high as possible in the clamp. Re-tighten the clamp, ensuring that the jockey wheel is well clear of the brake mechanism and is securely retained.
Check presence and condition of the break-away cable, if damaged or not present, replace immediately. Connect break-away cable to towing bracket on towing vehicle.
Connect the electrical plug to the socket on the rear of the towing vehicle. Check that all lights are fully operational. Ensure also that the electrical lead cannot drag on the ground.
Finally ensure that the hand brake is in the fully off position.