by PhillB » Wed Nov 01, 2017 9:08 pm
Hi, welcome to the MITG forum.
Looking at the circuit diagram for "up to 1964" in my workshop manual, it looks like the headlight switch should have 8 terminals marked 1 to 8.
T1 - 2 red wires
T4 - brown with blue trace
T7 - purple
T8 - blue
If your wires are different colours then let me know and I'll try and work out the right diagram or let you know where each wire should go.
Also tricky if someone has rewired stuff using different colours or a wiring harness from a different model of Mini.
Be really careful when you try it out because there are NO FUSES on the standard Mini loom for the headlight or ignition circuit and the headlight circuit is live all the time, Just switch it on very briefly and get someone to observe if it's working. Be ready to disconnect the battery quickly if you have a problem, otherwise you may burn out or melt your wiring.

68 Morris Cooper S Mk1 (*ex 78 1275 LS 4th last built, 70 Morris 1500 OHC & 70 MiniMatic)