Horn Wiring Question. My cart came without a harness

[Reelop19]

I bought a cart that was basically a shell. So I bought a complete light kit. Everything in the diagram is wired. What I don’t understand is the wiring for the horn. The harness has everything going to the horn but nothing going to the switch. Obviously some pre-existing wiring is assumed here but I have none. Could someone tell me how to wire in the switch? Thanks
A6FC868E-584B-4732-BFDB-398867DAD98A.jpg

[Mooncarter]

If I'm understanding you, power needs to go to switch before the horn.

Probably should have a relay between the switch and the horn.

[meimk]

If it's a light kit that's supports a horn there should be a switch. Some include it as part of a turn signal switch.

[yawood]

I think there is probably a car type indicator/horn/light switch on the steering column which is not shown on the diagram but would connect to P1. The switch would be like the one I fitted to my cart (picture 1).

At the risk of confusing you, here's a copy of my circuits when I wired mine. You may find them useful when getting your head around your circuits.

The diagram you posted is intriguing for its spelling. Colour is as we and the Brits would spell it but Definition is not spelled "Defination" anywhere, so I'm not sure where your light kit came from.