Stupid question: where do you hook up a 2-wire dwell/tach?
Sep 17, 2013 | 10:38 AM
#1
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Stupid question: where do you hook up a 2-wire dwell/tach?
Bought an old dwell/tach for cheap and want to check my idle speed. It has two wires, red and black alligator clips. I hook the red to the IGN terminal in the diagnostic box and the black to...? I dont want to damage the coil so I figured Id ask before just poking around with the lead
(The FSM shows a 3 wire tach)
(The FSM shows a 3 wire tach)
Sep 17, 2013 | 11:17 AM
#3
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From: 26.3 road miles from the AT (VA)
Typically red goes to the negative terminal on a coil and the black goes to a good ground. Assuming your engine uses the older style coil and points.
Last edited by wardriver; Sep 17, 2013 at 11:21 AM.
Sep 17, 2013 | 09:37 PM
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Sep 18, 2013 | 05:11 AM
#5
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From: S. FL
I have a 22re and an Actron 2 wire tach. Red goes to the IGN diagnostic port and black goes to ground. I believe my Chilton's manual shows how to hook up a tach, I can find the page if you are still afraid to hook it up, but I'm almost certain.
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