Holding tank gauge on 390 Sundancer.

[jfboucher]

My gauge in the control panel only shows either empty or full, no 1/2 way mark ever. Is there a 1/2 way indicator ? On the holding tank in the engine room I can only see 2 probes going into the tank.

Thanks.

 

[Boatguy49036]

My 2004 shows 1/2 full on control panel.

 

[jfboucher]

thanks!