Have a new to me 2016 21 TRX. Water pressure gauge is stuck at 20 psi. I've heard that they can become frozen, but there's no water line going to the gauge. I have water lines going to 2 solenoids. How can I diagnose?
Edit: Just realized that one solenoid is for the speedometer. Regardless.....can I diagnose this? Or just replace the gauge and solenoid?
solenoid.jpg