electric plugs
The DB line of connectors is what came first to my mind also. You might need 2/3 pins each for power and ground.
I have used stacked PowerPole connectors in a DG pedestal type instrument panel to allow it to be removed for winter play. They dovetail together so nicely and stay connected. Even the smallest pin (three sizes are available) can handle 15 amps!
John (OHM)
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