every time i shut off the ignition via the key, it pops the 30amp circuit breaker on the back of the wire block. what the hell!?

new since last year: ignition switch, double grounds to battery from back of the block, new wire block, rewired the motor to wire block , new circuit breaker , and new connectors, and 3 new wires to dash from wire block , new ground, new power wire and new ignition wire.


any help?

Alt is 8 gauge to engine side of wireblock . There is a jumper shunt on the boat side connecting it to terminal which goes to dash and to circuit breaker

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Does it do it even if you don't start it and by just turning key on then off?


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It's typical to have the jumper mine was wired that way. If it's a single wire alt sounds like the internal regulator is going bad and discharging when off. Double check your ground to block to battery also bud


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Seems like the alt is charging at 15 volts +....going to install my back up alt

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or ditch the breaker and run to auto zone and buy a fuse holder and put a regular fuse on it and see what happens. The breaker could be taking a crap too


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CHROMEY,

Got your message after midnight, sorry about that.

The field on the alternator is not shutting off during shut down. Do you have a single wire? Or are there three wires?

GT

Single wire

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A single wire alternator needs to be wired directly to the battery, is that how yours is set up? It should go right to the starter solenoid. Nowhere else.

I need to go back into the thread and see if I see something funny.