Its easy enough worked out, bolt your spot lights on in place, wire up the lights like the diagram and leave that wire (full beam)to the last, take of the rubber cup round the rear of the lights and temp wire ie wind the bare cable round one of the pertruding metal parts of the bulb and try the full beams, thats how I found out how to wire in my 6 spotlights, trial by error, ps have a couple of fuses handy just incase and make sure you are standing on a rubber mat