Why Are My Batteries Connected?
 

I Have Two Battery Switches But If I Cut Either Of Them Off Both Eng's St Ill Have Power. Could Something In The Dash Or Cocpit Be Running A Connection

Re: Why Are My Batteries Connected?
 

Power to keep running or power to crank?

Re: Why Are My Batteries Connected?
 

both

Re: Why Are My Batteries Connected?
 

Something could be connected on the hot side of the battery switch, connected to the starter hot terminal or directly to the battery. Some boats are such a wiring nightmare that who knows were the power is back feeding from.

Re: Why Are My Batteries Connected?
 

efi so i guess i have to fig it out thanks

Re: Why Are My Batteries Connected?
 

Sounds like the starters are wired direct to batteries + to me.
The main AC buss usually comes off of the starter.

The "right" way to wire the switches is batteries + to switch, and then switch output to starter.

Re: Why Are My Batteries Connected?
 

Check this thread out. Is this what you have?

Re: Why Are My Batteries Connected?
 

forgot something the tread

Re: Why Are My Batteries Connected?
 

It should be pretty easy to trace down, see whats bolted to your positive side of your batteries and trace them down. If they only have a run to the perko switch than you should be able to shut them off. If they have any other wires, (starter, alt, trim pump) then you could have power runnning off one of those for your motor. The standard 9 pin Merc harness runs power to you dash, that harness is probably connected to your starter or altenator.

Re: Why Are My Batteries Connected?
 

oops,

here it is http://www.offshoreonly.com/forums/s...ttery+switches