It is important that the ball size on your minibus rental or borrowed minibus to tow the horse trailer matches the trailer hitch. Check the tire pressure to ensure optimal torque. Make sure your hitch is set high enough so that the trailer ball lines up.
Back up your trailer into the hitch. It would be easier if someone who knows how to back up could help. You'll need to raise the trailer as high as possible to attach the leveler bar to the hitch. After you have set the keeper clips, and raised the jackstand as high as possible, it's time to check and connect your safety chains. Minibus In Manchester
Some safety advice: walk inside the trailer and check for nests of hornets, etc. This is for your horses' safety. If you are able to reach the emergency releases, they will work better. You will need to reach the emergency quick releases if a horse falls or pulls and you are unable to do so.
After that, you'll need to check that all of the lights on the minibus are working, including the brake and turn signal lights as well as the marker/running light. Place the blocks your trailers were on before you connected to it in a safe place.