Does anyone know where the fresh water tank is located and how it is filled up?

Also, where is holding tank purged from?

Does the 377 have the ability to drop waste straight from the boat (assuming you are 3 miles out)

It has a shorepower AC & Heat but the seapump is not turning on, any recommendations on what seapump to replace it with (if its the unit that is bad)

Any 377 or KV guys out there that will please help? Or even anyone else that could give me any suggestions at all??

I have absolutely no info for you, I just felt bad that nobody replied to you. Good luck

I have a 79 377 but it was mostly gutted long before I bought it. I believe the FW tank was forward of the helm stbd side and filled through one of the thru-hull fittings next to the gas cap. Pretty sure the thru-hull fitting stbd side at the bottom under aft-most cabin window was grey water out, not sure where brown water came out.

My 377 have a standart 20 liter fresh water white plastic box on the drivers site very near to the rear sofa on a vertical installation line. I install one more 40 liter because 20 ltr it is not enough. with 60 liter you can spend 2-3 unjacouzi days on the boat. It has waste hoses installation, thru hull fittings etc but not a tank or a pump. But as i invastigate they have enough space in the WC room for a waste plastik tank, so try it. I ll hope to help.