posted 03-25-2003 02:37 PM ET (US)
Everything electrical on my 25 Revenge that has been intermittent (except the windshield mounted wiper motor, which was literally filled with a solid chunk of rust) has been repaired by using a multimeter at the end of the circuit to check for continuity, then following the wires back until I found the broken/loose/wrong/shorting connector installed by the previous owner's. It became so predictable that I now laugh about playing 'find the connector' -- even with all the talk of marine wire, etc, I have yet to find a broken wire in mid-run or a place where corrosion has gone more than an inch or two up from a connector.
I've thought about doing the same as you, replacing everything with new switches, breakers, etc, but don't have the time, and I like the old style switches (yeah, I like the old wood too).
The trick, if you do it 'bit by bit' like me is to keep track of everything, and upgrade the connectors, routing, etc. as you go. The stuff looks a lot better after the first third of the work, since a little cleaning up goes a long way -- i.e. removing old unused wires, bundling and hanging groups, and cleaning connections.
If you haven't done any electrical work, I also suggest any of the excellent 'boatowners/sailors' electrical manuals available at West, BoatUS, etc. -- just remember the basic safety rules cited there.
Most of the wiring on a Revenge style boat is pretty simple and once you get the hang of it, it is easy to do and do well.