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#1
12-11-2005, 08:04 PM
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Tach woes
Well, I tried the Ebay tach yesterday with no luck. It just pegs the meter as soon as I apply power. I did find a pot inside so I beleive that it can be calibrated for my six.
I guess it might be time to call Palo Alto to see what they say. See it here Michael
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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033 Current have, 1983 300SD 126.120 
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#3
12-12-2005, 02:30 AM
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It's an electronic tach and I was told it was out of a early '70s Mercedes. No sender as it's for a gas engine. It has a red lead labeled + and a green one labeled TD1 or something like that.
It's labeled on the can as being for an 8 cylinder engine but I think I can fine tune it for my six with the pot, if only it didn't slam into the peg at the top end. Michael
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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033 Current have, 1983 300SD 126.120
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#4
12-12-2005, 09:21 AM
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There's more than one way to set up a tach. Aftermarket units run off the alternator. I think standard MB tachs hook to the multi-plug female adapter that runs diagnostic tools. And then it might attach to the distributor ignition system too.
Am thinking about one for the 240D, thats why I asked. Have seen a few tachs on ebay, but they never include the complete wiring system.
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