Princess 35 holding tank

[evilspear]

Hi all, been the proud owner of a p35 for 3 weeks now, living on an inland marina i usually use the marina facilities but when it comes to a pumpout is there a gauge or light that tell me the holding tank is full and ready for a pumpout. The boat is the 1988 flybridge model

 

[Tranona]

Welcome

Do you actually have a holding tank as it would not have been an original fit. therefore if there is one it would have been installed later and may not have any gauge or warning light. Even if it has they are notoriously unreliable.

Suggest you trace where the tank is and see if there are any wires leading from it. There are so many different types of tank and installations it is difficult to give any detailed advice.