Hi all. Im having some trouble wiring up the electrics on my girlfriends towbar to an mk2 focus. has anyone on here done it before?? maybe got some type of wiring diagram. the instructions i got of witter i cant make head or tail of. Do i need the 7 way by pass relay and the buzzer??

Any help/drawings/instructions guys would be great.. i need to get it done for tomorrow as shes takin the horses out to a show in the mornin

Cheers