Dash switches issue

Johnny Slalom

Johnny Slalom

New Member
Jun 5, 2019
24
Madison, MS
Boat Info
99 Sea Ray Sundancer 270
Engines
454 Mercruiser w/Bravo III Drives
I discovered my blower won't switch on, then discovered several other switches (water system, horn) aren't working either. It's odd because some switches on the panel still work (cockpit lights, bilge pump). I normally would think it's a switch issue, but since there are several, I'm not sure. Also, seems odd to me that some work and others don't. I would think they'd all be on the same circuit. Any suggestions? Thanks so much in advance.
 
Is this a new development? Or a new-to-you boat?

I would start with the basics like popping each switch out of the panel and checking to see if there's power to the switches (or probe from below the helm if there's space to do so). If not, see if you can get a wiring diagram for the boat. Maybe the ones that don't work share a common ground. It's possible (but unlikely) that you have a few bad switches.
 
Phil, thanks so much for the help. I think I've isolated the problem to the wiring under the dash and hopefully got it handled. Thanks again!
 
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