I purchased an 1980 Hunter 33 in what I think is pretty good condition despite being on jacks for a few years. I am enjoying the small amount of work it has required to make it a more pleasant sailing experience. But I have one embarrassing question I'd like to run by you more experienced Hunter Cherubini owners: There is an electric push/pull button switch in the head, on the panel above the sink, beside the A/C outlet. The prior owner never knew what this did (despite sailing it for many many years). It seems to send two red wires over to the engine/battery compartment but I can't easily trace them further. Does anybody have an idea what this might be for? It worries me to have an electrical switch whose function I don't know....