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I have a 1977 850 4cyl Thunderbolt ign and she needs an RPM gauge on a budget, any recomended? And where can I find how to install
Searched to no avail thanks
New ones are aout $80....used ones you take your chances with...prob about half this price..
Install is easy...you should have a tach plug in on your control box...look at the little round plug in on the front of it.