Re: WTF is this?
Interesting assumptions all. I think I can narrow it down to two possibilities. 1. The boat, until just recently, was equipped with a LORAN receiver. 2. I have a switch on my fuse panel labeled "Holding Tank", but I know for certain that it does not have one and that the only pump attached to the head is a manual bilge type pump, which may, or may not, have been original. Could it have been originally equipped with a powered macerator pump, given the "Holding Tank" switch? I'll be at the boat this afternoon to try to get to the bottom of this mystery....
EDIT: Some food for thought...the PO, who owned the boat for more than 30 years, was an Electrical Engineer for the aircraft industry here in SoCal...
If humans could fly, it would be considered exercise, and no one would do it.
Last edited by ericb760; 09-30-2013 at 11:28 AM.