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Author Topic:   Voltage Problems 1989 38' Sea Ray
skidog519 posted 05-29-2006 04:50 PM ET (US)   Profile for skidog519   Send Email to skidog519  
Looking for some help. My 1989 38" sea Ray has just recently started giving me concerning readings at the helm port volt gauge of almost 18. I went into the bilge and sure enough one of the batteries was boiling. Here is what is strange. If I start my port engine by itself it works and reads fine. When I start my starboard engine along with my port engine I immediately get a high volt gauge reading especially after increasing the RPM's on the starboard motor. My electrical system also has a battery isolator with two leads going to the alternator output and two leads going to the battery switch. Is this an alternator / voltage regulator problem or something else. I am confused why starting my starboard engine has an effect on the port side gauge. Looking for the process of elimination.

bsmotril posted 05-29-2006 06:28 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
You should have two battery switches, one for each motor's charging system that let's you switch to either battery, or to Both. How are these switches set when you have this problem?
skidog519 posted 05-29-2006 06:45 PM ET (US)     Profile for skidog519  Send Email to skidog519     
Yes I do have two battery switches and they are both set to on. It is either On or Off. we have checked the voltage to them and have what we need there

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