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93 Ski Nautique alternator wiring |
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93 Ski Nautique 
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Joined: September-10-2004 Location: United States Status: Offline Points: 45 |
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 Topic: 93 Ski Nautique alternator wiringPosted: April-19-2016 at 1:10am |
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Well, I pulled my original 93 Ski Nautique alternator to have it rebuilt as it slowly will discharge the battery. I never got around to getting it fixed and when I went to put it back in my phone no longer had the picture of the wires. I thought I had it right but it is not charging and I'm suspicious that I did not rewire it properly.
It has 3 wires that go to it, one is a red (or orange) and that is larger diameter. No doubt about that one. Then there are 2 others, one is black and the other yellow. I hooked the black up to what appears to be a ground connection, and the yellow to what appeared to be the only other terminal but now I question if I have it right. Anybody have a picture or schematic of the alternator wiring? Thanks in advance, John |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: April-19-2016 at 6:45am |
John, You haven't been visiting enough!!  Here's Tim's schematic again:
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4945 |
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Posted: April-19-2016 at 9:53am |
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This pic might help for alternator specific wiring:
http://www.nautiqueparts.com/images/products/detail/wirealt.JPG |
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93 Ski Nautique
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Posted: April-19-2016 at 11:21am |
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Thanks, you guys are the best and really know the Correct Crafts. Looks like I had it wired correctly, I guess it is not charging. If it doesn't have enough voltage, my Perfect Pass won't let it pull the throttle cable. I'll test it out tonight.
Thanks! |
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Bri892001
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Posted: April-19-2016 at 12:28pm |
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How did you determine that it was the alternator that was dis-charging the battery?
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Bri892001
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Posted: April-19-2016 at 12:31pm |
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Also, keep in mind, there is more at play than just the alternator if you are seeing lower than expected voltage at your dash voltemeter, or Perfect Pass voltometer readout.
Inadequate wiring to the dash is another strong possibility. Pick up a multimeter, nothing fancy required, and set it to 12V DC and test your voltage right at the battery. Do it both with the engine running and and not running. See what you get. |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: April-19-2016 at 1:35pm |
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John,
Adding to the list, how old is the battery, what type of charger do you have when the battery isn't running the boat if you have one and use it and hopefully the battery isn't a deep cycle. |
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93 Ski Nautique
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Posted: April-19-2016 at 3:33pm |
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It's been a couple of years since I troubleshot it. I put an ohm meter across the battery terminal (without the battery) and found a weak short. I then pulled the 12 volt supply off the alternator and the short went away. I can't remember the resistance, but it was enough to drain the battery in a week or 2 if I didn't use the boat. Since then, I've been just pulling the ground off the battery if I'm going to let the boat sit.
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Bri892001
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Posted: April-19-2016 at 3:44pm |
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Hmmmm...
That 12 Volt Power supply wire should be switched off when the key is switched off. I'm wondering if something else is going on there. Maybe that wire is connected to something it shouldn't be somehow. |
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93 Ski Nautique
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Posted: April-19-2016 at 3:44pm |
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All good points, most of which I am familiar with. This is a boat that never had any problems running the Perfect Pass before.. Now that I'm sure I had the alternator wired in properly, I will run it tonight and see what kind of voltage it is putting out exactly. I am also pretty familiar with the poor grounds on my generation of boats.
With respect to your other questions - the battery is several years old, still seems strong, cranked the boat well but I will troubleshoot it further. I don't use any kind of charger on it except charging it for a few hours every month in the winter in the house. Normally I try not to let the boat sit for too long during the season.. Nope, it's not a deep cycle, it's a regular starting battery. . |
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93 Ski Nautique
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Posted: April-19-2016 at 3:47pm |
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The 12 volt exciter lead has always been hot all the time on this boat. I wish it wasn't!
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C-Bass
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Joined: November-18-2008 Location: Columbus, IN Status: Offline Points: 1248 |
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Posted: April-19-2016 at 4:20pm |
Change it! |
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93 Ski Nautique
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Posted: April-19-2016 at 4:31pm |
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Change it! -
I like the concept, I'll put that on the to-do list. |
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1114 |
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Posted: April-19-2016 at 4:36pm |
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Sounds like someone has done some creative wiring on your boat. If "hot all the time" means with the key off and the ignition breaker off then it is wired directly to the battery. Most likely coming from the 50amp breaker. I would move it to the top of your list.
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93 Ski Nautique
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Posted: April-19-2016 at 4:39pm |
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Must be a weird factory deal, the only person that has ever touched this boat has been me. I bought it brand new in 1994 :), and I've had it ever since. But that doesn't mean it's right, I like the idea of switching it. I'm going to check some other boats from that vintage also.
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desertskier
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Posted: April-19-2016 at 4:48pm |
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So the engine wiring is still original including the ProTec?
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93 Ski Nautique
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Posted: April-19-2016 at 4:57pm |
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So the engine wiring is still original including the ProTec?
Yes and no.. My boat is actually one of the "base" boats. It does not have the ProTec, that was the higher horsepower engine right? The boat has a 1.1 straight transmission, the engine is at an angle like the older ones, and it turns a 13x13 prop. All wiring is original other than plug wires. |
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desertskier
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Posted: April-19-2016 at 5:11pm |
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Then the wiring should match the schematic Pete posted. I would follow the exciter wire and see where it goes.
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Bri892001
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Posted: April-19-2016 at 5:45pm |
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Any pics of your boat? It sounds like you have a Standard. Not relevant to the matter at hand, but just curious since I have one and haven't really seen any others on this site.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: April-19-2016 at 6:31pm |
John, As Sean mentioned, do see where that exciter wire goes and fill us in. I understand you're the only one that's touched the boat since new but, you're forgetting it's been touched at the factory by many! You never know what they did!!  Has it always drained the battery?
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KRoundy
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Posted: April-20-2016 at 12:33am |
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You have a "scrappy"! Very cool. Those are a bit more rare, but a guy in my ski club up here in WA has one. Blue and grey just like mine, but as you say very basic interior and the RR engine with the 1:1 transmission.
Pictures. We want them. |
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Previous: 1993 Electric Blue/Charcoal Ski Nautique
Current: 2016 Ski Nautique 200 Open Bow |
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93 Ski Nautique
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Posted: April-20-2016 at 1:49am |
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Well guess what guys, I checked the alternator today and the exciter lead was cold with the switch off. So now I don't know where my weak short is, I've been pulling the negative cable for years to prevent slow battery drain, for some reason I thought it was the exciter lead.
And the alternator is charging just fine, but the Perfect Pass is not working, so I will trouble shoot that tomorrow. The boat is a base boat that I bought from Horizon Marine in Maryland. i'll try to post some pictures tomorrow, it has no padding on the dogbox nor around the gunnels. I think I can find ads for the boat in the 1993 Water Ski guide, they were $17,500 without a trailer brand new. I've loved it since I bought it, A great boat that I still pull 35 off skiers with. |
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8122pbrainard
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Posted: April-20-2016 at 6:55am |
John, It's time for a parasitic load test to see what's pulling the battery down. |
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Bri892001
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Posted: April-20-2016 at 9:40am |
It could be that weak/aging wiring is causing low voltage at your dash. Use the PP's own voltage gauge, to see what voltage it is getting. They really Edit: don't want to work right if they are not seeing the full voltage. Here is the thread where I upgraded the dash wiring on mine: http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21901 |
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93 Ski Nautique
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Posted: April-22-2016 at 1:28am |
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Update, well I tried to run some diagnostics per Perfect Pass. Seems like it just wasn't getting enough voltage to run the servo motor. I moved the power source from the tach over to the ignition switch. That made all the difference in the world, no longer beeps at idle, and actuates the servo motor no matter what the RPMs or if the engine is running or not.
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Bri892001
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Posted: April-22-2016 at 9:42am |
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Moving the power source to the key reduces the amount of connections between the PP and the power sources. So, probably less chance for voltage drop.
Good you solved it  |
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desertskier
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Posted: April-22-2016 at 12:01pm |
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I would consider also running a single wire from the output of the ignition breaker to the input of the key switch. That will bypass the daisy chain voltage drops in the dash between the breaker and the key. I added this wire on my '92 but for different reasons, it helps with Protec issues.
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93 Ski Nautique wrote: