Water cooled voltage regulater

[spareparts]

If the rest of teh system is in good shape(and I emphasize good shape) then you may want to look at the replacement regulator offered by rapair/cdi electronics, it actually turns off the feed voltage when its charged enough, rather than run the excess to ground like the mercury one did.

http://cdielectronics.com/Portals/0/...Regulators.pdf