240 SD Accessories not working

farmerf

New Member
Aug 13, 2016
1
Southern Maryland
Boat Info
240 Sundeck, Raymarine a50
Engines
350 Mercruiser
I have a 2008 240 Sundeck and the last time I started the boat all accessories did not work. The engine and gauges worked fine but the bilge pump, lights, stereo, fresh water pump, horn, etc. were all dead. I checked the fuses in the storage area in front of the pilot station and all were fine. Since all these ancillary systems failed at the same time, I assume there must be a "master" fuse somewhere I can't find.

Thanks for your help.

FF
 
Bilge pump not working is not good. Have you tried inspecting the wiring harness to ensure everything is connected to the switches?
 
My brother had a similar problem and it was the whole switch unit. Turns out that his 2003 220 Sundeck and my 2002 230BR use a multiplexor system between the switches and the relays. In other words, the switches tell the mux to tell the de-mux to turn on a relay. We borrowed the switch unit, which has the mux in it, from my boat and his boat worked well. So, he bought a new one - for something like $280. I have the old one which I think has a part number if you are interested. But, in our boats it is the switch pad to the right of the steering wheel.
 
Did you solve your issue? Ditto on what nysxr said. I had exactly the same problem, the boat was new to me and it took a while to sort out the main breaker's function, its not intuitive to reset. Have a good look near the battery switch, the main breaker is there, there is likely a black plastic arm that has flipped down, just rotate it back up and the breaker will reset.
 

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