Need wiring help with blower switch connections

[ScottH]

My blower stopped working, again. Last winter I replaced the blower motor and relay. Now it stopped again, not sure if it's a power problem or switch. I'm going to check now but need info on what wires and where they connect to the blower switch.

It's an a/c 72 C20 truck that a po put a wrong switch in. I have an old correct one which I'm gonna try putting in. Wires were cut and new ends put on so I don't know which color goes on whick terminal (plug gone).

If some one can tell me what color wires go where, or has a pic of this I would really appreciate it. It's getting cold!

Thanks and happy holidays to all!