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Old 08-18-2021, 03:24 AM   #1
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Default water pump fuse - I did something dumb

I have a 3300, and the switch for my water pump is in the galley. It still works, but was lighted, and I kept forgetting to turn it off when away, so I bought a replacement that looked identical. Was hard to tell - looking at the embossed info on each switch, I generally came to believe the new switch was actually slightly lower rated than the old, which I figured was OK. There are 3 slide-on connectors. I noted which was which, then carefully pull them from the old and tried the new. Nothing. So I quickly reverted back to my old switch (which worked moments before) - nothing.

I deserve a scolding for forgetting to turn off the batteries before I did this...

I cannot be sure - I thought I may have heard a click somewhere, possibly in the area of the water pump when I was doing this, but I'm not 100%.

Do you all figure it's just a blown fuse? I looked at my fuse panel...alas, there are like 3 banks with tons of fuses, all unlabeled...
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Old 08-18-2021, 10:46 AM   #2
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Yep,
blown fuse.
More than likely under helm, best to figure out which one and replace it.
I use a $5 test light from Harbor freight to test fuses.
Don
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Old 08-18-2021, 05:35 PM   #3
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Here's the fuse diagram.




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Old 08-18-2021, 10:29 PM   #4
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Sph801 you are my hero...fuse diagram baby!
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Old 08-19-2021, 04:38 PM   #5
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I have the manual so I snapped a pic, laminated it, and stuck it by the fuse block. Glad I could help.


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Old 08-20-2021, 02:31 PM   #6
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Mine were all in different locations vs. the manual, but the wire colors look to be spot on. I'm currently replacing the factory Buss spade terminal panels with Blue Sea Systems panels that have ring/screw terminals. This will be very helpful when I go to label them so thanks from me as well!

As an aside, I am coating the fuse blades and terminals with dielectric grease to help protect from corrosion.
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