Boats For Sale:
Circuit Breaker/switches Question(s) |
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JustinB 
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Joined: July-11-2009 Location: Seattle Status: Offline Points: 11 |
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 Topic: Circuit Breaker/switches Question(s)Posted: July-30-2009 at 4:46pm |
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I've noticed on my 90 SN that when I depress some of the switches that it causes a major voltage drain...taking the voltage down to somewhere south of 8 volts. It only happens with some and not all. The culprits I can remember off the top of my head seem to be Navigation lights, bilge pump automatic, bilge pump manual, accessory #1, and I can't recall what else. The ones that I know work fine are the ignition, accessory #2, blower, and anchor lights.
Is the best remedy to replace the questionable switches/circuit breakers? TIA, Justin |
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behindpropeller
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Joined: July-31-2006 Status: Offline Points: 1810 |
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Posted: July-30-2009 at 7:18pm |
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Start with your grounds on that circuit.
Tim |
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JustinB
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Posted: July-30-2009 at 10:01pm |
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I'm not sure I understand your post...are you suggesting I run a new ground to those circuits that are acting funny?
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behindpropeller
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Posted: July-31-2009 at 12:28am |
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You can start by cleaning the contacts.
Personally.....If all of the items work I would not mess with anything. Tim |
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WakeSlayer
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Joined: March-15-2006 Location: United States Status: Offline Points: 2138 |
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Posted: July-31-2009 at 1:22am |
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I kind of disagree with not messing with it. I have a couple of the same issues on my SAN and want them resolved. I think it is the breakers. My Nav lights create a huge hit on the voltage as does my heater. This is not the case on the Mustang as I can have the heater, lights, blower, bilge, and stereo up loud and it will not budge my voltage gauge. Following this same thread on PN, btw.
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Mike N
1968 Mustang |
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behindpropeller
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Posted: July-31-2009 at 1:40am |
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Well...
You can jump the breaker and see what happens. You can check your grounds and see what happens.' You can rewire your boat. If you are that worried the best thing to start with is buy a volt meter and make sure your voltage gauge in your dash is working. If the alternator is charging, the battery is not draining, the breakers are not popping, and your not on fire you are good! Tim |
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WakeSlayer
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Posted: July-31-2009 at 1:27pm |
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Well...
I have never had a no start. Never had any like issues. I am going to check grounds. My voltage guage and my Perfect Pass read 11.9v. I can play my stereo all day, run my ballast pumps, all that. However, my heater switch will knock the voltage gauge down one volt per setting: Low, med, high. My Nav lights will drop it about 1.5 volts. Nothing else hits the voltage, ballast pumps, blower, anchor lights, stereo (2 amps), 12v acc. I installed a 100A alternator a couple years ago with no effect. Dual batteries. Even with no dead batteries, alt charging, no breakers popping, and no fire, I still want to figure it out. Will report back. |
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Mike N
1968 Mustang |
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behindpropeller
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Posted: July-31-2009 at 5:07pm |
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I don't think there is anything wrong with your boat.
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BuffaloBFN
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Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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Posted: July-31-2009 at 6:01pm |
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Doesn't that depend on who's driving? 
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behindpropeller
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Posted: July-31-2009 at 6:33pm |
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He should probably sell his 1999 because it sounds like he just wants something to fix. Hopefully he won't look at the volt gauge when he is starting the boat or he might think something is wrong with his starter! |
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WakeSlayer
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Posted: August-01-2009 at 10:53am |
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Funny.
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Mike N
1968 Mustang |
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BuffaloBFN
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Posted: August-01-2009 at 1:28pm |
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Just for the record, I meant that in a general sense. As a matter of fact, sometimes my boat doesn't run right when I'm behind the wheel!
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WakeSlayer
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Posted: August-01-2009 at 2:30pm |
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Tim,
What would happen if your plane was doing something like this? Blow it off? Or maybe think about trying to resolve the non-problem? Just curious. |
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Mike N
1968 Mustang |
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boat dr
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Posted: August-01-2009 at 4:24pm |
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Tim, I too think your advice was a little off center.Sarcasm is needed here at times but to suggest him sell his boat because of a voltage drop , or he just wants to fix something . I will have to cry foul on you.
Somehow I thought you were aviation related, is this the mindset you were taught , or just came with the attitude. Remind me if you do have your A and P or worse yet an IA not to fly with or around you.If you only have a pilots license , can you spell "Pre Flight" ......Bad advice DUDE....... Justin all is not correct with your boat, wiring problems and boats can produce FIRE or worse a large BOOM. Check your boat carefully or have it done at a reputable dealer, be safe not sorry . if you need help call me I will try to help any way I can , as well as "MOST" on this site............Billy |
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BuffaloBFN
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Posted: August-01-2009 at 6:05pm |
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I read this post wrong the first time and missed the 1999 comment. Mike, absolutely no harm meant! C'mon Tim, you're not the only pilot on this board.
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WakeSlayer
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Posted: August-01-2009 at 7:06pm |
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Not at all, Greg. You try and call me this afternoon? Was out looking at my future Nautique project. Man, do I have the bug again. Dammit...
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Mike N
1968 Mustang |
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behindpropeller
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Posted: August-01-2009 at 7:13pm |
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I'm sorry if my sarcasm offended you. I thought my advice to check the breakers and grounds was a good start.
Quite honestly...I think a volt gauge is useless. You can have 12 volts but not be able to pull any current at 12V. Check the gauge. To really find the answer you need to get a schematic of both boats and find out where the volt meter is in the circuit. Boat Dr- I'm very (mechanically) meticulous with everything. I'm the guy everybody comes running to when something is broken. Sorry if my sarcasm seems mean but I have yet to turn anybody away for help. Tim |
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ErikM
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Joined: August-20-2008 Location: United States Status: Offline Points: 9 |
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Posted: August-05-2009 at 12:19am |
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yes.. add another(big) ground wire and connect some of the gauges straight to that. it did wonders to my 92sn
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dwcar
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Posted: August-05-2009 at 12:39am |
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What is the best way to clean the grounds on the back of the gauges?
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83Ski
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SNobsessed
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Posted: August-05-2009 at 1:18am |
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Very fine sandpaper, maybe 400 grit.
Also put Dielectric grease on them & they won't corrode again, at least right away! |
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behindpropeller wrote: