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Old 08-17-1999, 07:21 PM   #1
IIBAD4U
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Join Date: Jan 1999
Location: Bismarck ND USA
Posts: 8
Post tach question

How do tachs work. Do they have a positive wire that when it get's grounded that triggers it? The stock tach on my car (77 mustang II) doesn't work with my ignition. I don't think I have been hooking it up right. Well, I just need to know how a tach works in order to figure it out.

Thanks
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