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Navigation, blinker and sump box pump wont work

Posted: Sun Jun 06, 2021 3:15 pm
by Crabs
2002 Wellcraft Martinique 2600-
Hey everyone, I am at a total loss here....
I just bought this boat and was checking the upgraded speakers they came with that light up. Upon pulling the speaker something shorted and the navigation lights, the wiper switch and the sump box pump quit working. I pulled the dash and found the wiper and the nav lights switches were jumped together and an inline fuse was blown. I replaced the fuse and everything came on....for a few minutes then shut off again.

I replaced the nav switch, I replaced the sump box thinking it was unrelated and the old pump just went out. Doesn't appear to be getting power and suspect its tied into the other electrical issue.

Any ideas? Tested the block and its generating power, tested the existing lines and they were getting about 7 volts after the fuse.....Any ideas would be appreciated.I cannot find a wiring diagram at all and I see others with this model have posted without success.