Mk2 wiring help needed

I am getting towards the end of my engine rebuild on my new to me 850 and have installed a Pazon Altair and reg/rectifier however I never took the time to check all of the electrical functions prior to tearing it down, other than starting it. Firstly, the headlight and indicators weren't working and when I removed the rubber cover from the master switch, I found it only has 3 sets of terminals, which I read ,was only on the 1971. I have ordered a new switch but in the meantime have connected the power in (Blue/Brown) to the power out(White) but when I power the Blue/Yellow or Brown/Green, I see voltage when probed to the frame, also can anyone tell me which connectors fit where on the 3 way headlight toggle switch? Help appreciated, thanks.

Take pictures during disassembly, of everything. That gives you some basic form of starting reference.

Dedubyah said:

I found it only has 3 sets of terminals,

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To use the three terminal switch plug the blue/yellow onto terminal three with the brown/green.

Dedubyah said:

also can anyone tell me which connectors fit where on the 3 way headlight toggle switch?

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Should be a two position switch but connect blue/yellow to terminal four and blue to terminal eight.