It's a 1975 aft cabin. Not sure if the tachs are original or not. They look like they could be.
I have not yet found the cause of the problem to many more important things to do first. When running at night this summer I had a little red lens flash to keep on eye on things when it was really dark.
I would have to look again to see which gauges did what and when. But the gauges would get twitchy or dead head one way or another when the intarument light switch was pulled.
Plus the voltage problem from the block to panel ground. It worked last year so I don’t know what changed, cursory look at connections and wires it looked OK. I still need to try Curts gound idea. But still would like to find the cause of the problem otherwise it eats at me.
Everything seems to work fine as long as that switch is off. Temp gauges read right on and oil pressure gauge right on as compared to oil pressure test gauge.
Like you Mark I figured I would work on it over the winter.
I have decided to pull the boat out this year and do a number of things to it. I plan on starting a thread like Paul did. Except mine will be over several months not 11 days!
Here is a list of things to do more or less in order of import.
Bottom Paint
Buff free board of hull
Rudder shaft packing
Check shaft hubs for divots
Shaft alignment
Check Strut bearings
New manifold / risers / hoses / (valve job?) starboard engine
Review electric service
Stanchion fittings
Exhaust hump hose
Rebuild outside deck benchs
Resurface formica counter tops
Install depth finder
I’ll be here all winter too. I think I have figured out a good way to tarp the boat on the cheap and easy too.
Bill