Help Needed Identifying Mystery Plug

[capt-capsaicin]

My port side battery went bad so I got a replacement. I disconnected the wiring and pulled the old battery out. When I pulled the battery out one set of wires just kind of came out with it. There was no undue force applied. This loose set of wires terminates at a plug that obviously was connected to something at some point. This is on a Crestliner with a Mercruiser I/O.

I cannot find what this would have been plugged into so I think it is a leftover from some other electronics that is no longer installed. I checked my fishfinders, engine trim, steering, starter, lights, and everything works. Does anyone recognise this plug? What could it have gone to? Thanks for any help you can offer.

 

[Meatwagon]

Looks like a power supply for a hummingbird.

 

[Dorado]

hummingbird

X2

 

[VanillaIceCream]

DC voltage plug (NATO version) to fire the explosive bolts holding the engine onto the transom.

Used in emergencies or aft transom fires to blow the engine clear of the boat.





(I have no actual idea what the plug is really for, probably best to trust what the other guys said)

 

[birdsnest]

I also think it is a Hummingbird positive/negative power supply connector. Notice the round and square female terminals to prevent polarity cross.

 

[capt-capsaicin]

Thank you everyone for your help. After carefully considering my options I have decided to go ahead and reinstall the explosive bolts in case I need to jettison the engine from the boat in a Mercrusier self immolation event.

 

[Rollie Peschon]

Humminbird PC 10 power cord

 

[Striper Slayer]

Yup. Humminbird cable.