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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LT1 Tach hookup

   
Old Jan 31, 2007 | 10:31 AM
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Greg Nolte's Avatar
Greg Nolte
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Joined: Oct 1999
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From: Buffalo NY
LT1 Tach hookup
Hi everyone... Its been awhile..
I finally have a stock dash tach for my 69 and my question is. How do I connect it. Does it go to the tach lead of the PCM or to the coil?
Thanks!
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Old Jan 31, 2007 | 12:44 PM
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evilundisguised
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Originally Posted by Greg Nolte
Hi everyone... Its been awhile..
I finally have a stock dash tach for my 69 and my question is. How do I connect it. Does it go to the tach lead of the PCM or to the coil?
Thanks!
The ECM has a tach output signal, use that.
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Old Jan 31, 2007 | 01:02 PM
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Loadre
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From: Kingsport, TN
What he said. Get a Haynes manual to trace down the wire.
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Old Jan 31, 2007 | 02:56 PM
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slo_z28
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From: Kansas City, Missouri
The tach output from the pcm is red A13
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