gas gague

My boat gas gague doesnt work. Its a 06 sea pro 1900Sv the bay boat. I had a 02 same boat last year and it didnt work in that one either. I replaced the sending unit in it and it didnt fix it. Is it just a sea pro thing or what? do i have to change out the gagues?

06 sea pro 1900sv
“Reel Estate”
06 14ft Alumnacraft

use a paper clip, and witht he key on, touch the pink and black wires at teh back of the gauge. if it registers full, you have a wiring issue between the gauge and the sender. if it doesnt move, its a bad gauge, assuming you have 12volts and ground at the gauge.
I see alot of issues with the square white plug under the dash, on the seapros. its the main boat harness

www.teamcharlestonmarine.com
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ok thanks chrisv

06 sea pro 1900sv
“Reel Estate”
06 14ft Alumnacraft