Bow thruster clicking away but refusing to turn

[Christhesailorr]

Hi all,
A quick bow thruster question. Following a freshwater flooding of a locker that shortened out my bowthruster, I recently installed a new wire harness and a new relay box. However, the engine doesn't turn instead we only hear the solenoid clicking.
I checked the initially supplied voltage it's 14.09V, but when pushing the "right" or "left" button on the thruster controller the clicking sounds starts and the voltage drops down to 6-8V.
The anchor winch runs just fine of the same batteries, so I doubt it's a battery issue.
Do you have any hints on how to troubleshoot this?
Best,
Chris

It's a Side-power SE100 12V bow thruster

 

[Christhesailorr]

Forgot to mention that I also tried it with a different fully charged battery with the same result- the solenoids click, but the engine won't turn ;-(

 

[duncan99210]

Recheck the new wiring. The voltage drop suggests that there’s a bad connection somewhere between the relay box and the thruster.

 

[davidpbo]

Could water have got into the motor or other wiring to it?

 

[PaulRainbow]

I'd suspect water ingress into the motor. Take the motor end cover off and have a look. If the motor isn't turning and you hold one of the buttons down you could burn something out.

 

[Boater Sam]

Wet or jammed/seized motor? Impeller choked?

 

[Bilgediver]

Caught a 10 LB Salmon in the thruster prop ?? Careful as motor seems to be drawing current and not turning. Could also be seized after the dunking

 

[Christhesailorr]

Thank you all, I'll check the wiring and connections again and will also remove the motor end cover and have a look. The water only got as high as the relay so could have reached the lowest part of the motor.