Unknown Boat: Electrical Problem Diagnosis

Electrical and electronic topics for small boats
scott
Posts: 1
Joined: Wed Apr 22, 2026 12:55 pm

Unknown Boat: Electrical Problem Diagnosis

Postby scott » Sun Apr 26, 2026 5:07 pm

Q1: what is the cause of the behavior [on some unknown brand, year, length, and model boat where there is an electrical circuit control switch labeled] “freshwater” that sends continuous water from the wipers, and the helm WIPER and WASHER switches do not stop the water?

SECOND COMPLETELY DIFFERENT TOPIC
What vendors sell a replacement for the placard that said “NAV LTS” above the display?

fno
Posts: 261
Joined: Thu Oct 15, 2015 10:01 pm
Location: Florida

Re: Unknown Boat: Electrical Problem Diagnosis

Postby fno » Sun Apr 26, 2026 6:48 pm

Scott, you need to be just a tad more specific. Nobody knows which boat model, year, trim package that you are asking about. Did you call your dealer? They might be a better source of the information you need.

jimh
Posts: 13290
Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
Contact:

Re: Unknown Boat: Electrical Problem Diagnosis

Postby jimh » Mon Apr 27, 2026 8:17 am

To get good advice you need to ask better questions and give much more specific information.

When devices that operate on electrical current flow exhibit an unexpected behavior of remaining in the ON state or OPERATING state, the most reasonable assumption is that electrical current is being supplied to the device and initiates operation of the device by some path that was not intended, and this unintended path of electrical current flow is occurring due to a fault or alteration in the wire conductors or a control device associated with the circuit controlling the device.

The remedy will be found by careful inspection and examination of the electrical circuitry, beginning at the device that is showing the unexpected constant ON state, and working back toward the source of electrical power for that circuit.