DC electrical system failure

Crossroads · Post by **Crossroads** » Sun Sep 09, 2012 6:08 pm

Had to leave anchourage on starboard engine, no navigation no DC lights, no water pump and no blower. Only DC accessory working was frig. Now plugged in on shore but still no DC power. Any ideas.

captainmaniac · Post by **captainmaniac** » Sun Sep 09, 2012 6:21 pm

What year / model do you have?

First (obvious) thoughts would be battery switches, or breakers on the engines (if you have electronic ignition, there are breaker buttons on the engines that you may need to reset if something draws too much power). If the engine breaker pops, the DC circuits from that side are dead.

I know on the F32 (79 vintage) the starboard engine battery powers blowers, the port handles most of the other systems. Fridge bypasses the batteries and is usually wired into the battery solenoid / cross over / emergency start box. So if you have a similar setup, having the starboard engine running but no blower seems weird.

boatsnbars · Post by **boatsnbars** » Sun Sep 09, 2012 6:41 pm

Had this happen on my old boat once, turned out to be the main ground wire from the engine to the DC ground panel. Rotted off on the engine end. I would be looking for a ground problem.

Crossroads · Post by **Crossroads** » Sun Sep 09, 2012 6:53 pm

Thanks. Both comments are appreciated.

prowlersfish · Post by **prowlersfish** » Sun Sep 09, 2012 6:56 pm

Could be a lose/dirty connection on one the batteries

gettaway · Post by **gettaway** » Sun Sep 09, 2012 7:03 pm

If your in an F-32, I believe that most if not all of the house power comes from the port engine wiring harness, hence you leaving on a starboard engine and no house power.

Check the power to the port engine starter battery terminal, the 8/10 gauge red+ wire runs to this terminal.

Also check the ground on that side as well, mine is grounded by a 8/10 ga black wire at the bell housing area near the starter.

or... it could be Bushs fault

gettaway · Post by **gettaway** » Sun Sep 09, 2012 7:12 pm

k9th · Post by **k9th** » Sun Sep 09, 2012 7:19 pm

Welcome aboard and hope you solve your problem.

rooferdave · Post by **rooferdave** » Sun Sep 09, 2012 8:01 pm

why no start on the port engine??? No power? or crank and no start? MY trojan gets all house power from starboard. If you have an emerg start button, and you push it you should hear the

rooferdave · Post by **rooferdave** » Sun Sep 09, 2012 8:49 pm

solonoid click and then you should have power to the house again, if solonoid does not click use booster cables