Mariner 20e 6A9 Wiring Help

[shetland_refurb]

Hi there,

Can anybody please help with a wiring diagram/or just guidance for an old Mariner 20e 20hp 2 Stroke? It’s a 6A9 model I think something like 1982? Not 100% sure of the year. I believe these motors were actually built by Yamaha.

It didn’t have the controls etc when it was bought, so there is just a plug (7 pin).

I am am hoping to connect up the electric starter motor & a kill switch if possible, both of which I’ll need to buy. I guess I’d need to cut the plug off and figure out which wire is which! Not sure what else runs through the plug?!

Any advice greatly appreciated!!

[boats.net]

You can order Yamaha 704-82570-12-00 key switch with kill switch and warning buzzer and a Yamaha 688-82586-50-00 7 pin main harness. It will plug right into your motor and will be all you need.

[shetland_refurb]

Great thanks. I’ve been looking and is it correct that the main harness has a 7 pin plug on the motor end, and then an 8 pin plug to match the switch unit on the other end?

Also the only retailers that I can find are all US based, are you aware of any UK sellers that might stock the main harness?

thanks again for the reply.

[boats.net]

Yes 7 pin engine and 8 pin key switch. No I don't of any place in UK but I would think any Yamaha outboard dealer would be able to get it.