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tach wiring color code |
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Gary S 
Grand Poobah 
Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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 Topic: tach wiring color codePosted: January-24-2011 at 3:06am |
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I'm changing out my replacement gauges with more period correct Teleflex ones.Since they are used I have no wiring instructions.The small gauges are pretty obvious since they are marked,but I have some questions about the tach.It has 4 wires,Red,Black,Grey and Light Blue. The Light Blue is for the lights and the Blace is the ground. I'm guessing the Red is power and the Grey is the signal from the coil? I have looked thru the wiring diagrams in the reference section and don't see any of these color combinations. Anyone have any ideas? These gauges were out of a Mercruiser if that helps.Thanks guys.
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dwcar
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Joined: February-11-2007 Location: Houston Texas Status: Offline Points: 1103 |
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Posted: January-24-2011 at 3:17am |
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Gary,
Those gauges look brand new. Where and how did you find them? |
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83Ski
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eric lavine
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Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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Posted: January-24-2011 at 9:57am |
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usually the gray wire powers the tach, i believe to the negative side of the coil
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"the things you own will start to own you"
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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Posted: January-24-2011 at 11:34am |
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Gary, your assumptions on the wiring colors is exactly right. Gray = tach feed.
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Keeganino
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Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Posted: January-24-2011 at 7:27pm |
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Those look mint. Are these the ones that were on Ebay? I almost picked them up myself if these are the same ones I wish I would have. Nice score! My gauges are identical. Right now the tach, oil pressure and ammeter do not work. Would like to get them running before this season starts.
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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Gary S
Grand Poobah
Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: January-24-2011 at 9:25pm |
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Thanks for the help guy's.Yes these were the ones off of ebay,I have been looking for a long time.They cleaned up real well,I believe the bezels are stainless,so I was able to buff them up.The insides of the glass is a little dirty,but after all the boats not new either.
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MartyMabe
Grand Poobah
Joined: February-21-2006 Location: High Point,NC Status: Offline Points: 3980 |
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Posted: January-24-2011 at 10:41pm |
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Aw- Gary, let's put prisim tape on that dash and put digital gauges in there, make a 20" LCD screen come up out of the dash and hang some dice off the rear-view mirror, and a BIG pair of NU
 ! off the exhaust!
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