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Old 08-07-2015, 03:40 PM   #1
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City: Huntington Beach, CA
Vessel Name: Great Escape
Vessel Model: 1981 Californian
Join Date: May 2012
Posts: 29
Tach's for 34' Californian

My Californian has twin Perkins 4-236 with mechanical tachs. The upper and lower station tachs are in series with the sending unit on the engine. I would like to convert to tachs that are driven by the alternator.
Question: Are the upper and lower tachs wired in series and then connected to the alternator tach output?

Any one changed to alternator driven tachs?
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Old 08-07-2015, 06:59 PM   #2
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City: California Delta
Vessel Name: FlyWright
Vessel Model: 1977 Marshall Californian 34 LRC
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Both my lower helm and FB tachs are alternator driven. The alt sense wire goes to the lower helm tach, then continues to the FB tach...series. I recently changed the stbd alternator to an externally regulated Balmar. I only connected one wire for the tach drive and both tachs picked up the signal.

I also have the 4.236.
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