Its a simple installation if you know how to strip wires and put connectors on them. There are 4 prongs on the relay. One goes to the positive battery terminal, one goes to the chassis ground, one goes to the horns as a positive connection, and one goes to the horns as a negative ground (also to chassis ground). Throw in a 20 amp fuse to be safe, and you are on your way.

If anyone wants these horns installed, contact me through PM.