Reply To: 1957 RD-18 30HP Electric start install

[Phil Budne]

I think you’ll need a (red) connection from the positive side of the battery to the B connector on the key switch; the key connects this to C (for choke), S (for start) and A (for accessories) as needed.

Also: the black connection from the starter (ground) to one of the M connectors on the switch will permanently kill the lower cylinder?

In some systems the black/ground connection on the solenoid goes to a safety interlock mercury switch on the engine to keep you from starting the engine at high throttle and/or in gear??

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