Note: Get a magnifying glass and check the numbers on the back of your switch, you will find that the Batt + terminal is 30, the double terminal is 15 & B and the single terminal is 50.
Good Luck.
I think Red and Yellow wires should be connected to Batt + 30 terminal.
B or 15 terminal connects to the wire from Coil, wire 32.
50 terminal connects to Starter solenoid wire, wire 46.