window switch question

Sprayed2v

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Jul 26, 2012
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VA
Long story short, zex window switch is cutting out around 4K rpm. Seems to be a common problem after searching the Web about solutions. Only solution I found was to buy a "tach driver", since the coil packs won't send a reliable reading to the window switch. Question is, is there another reliable source on the car to get an accurate rpm read out? If so were at? Also were can I get a tach driver from that will work with nitrous, or will they all work? I found one on American muscle for auto meter shift lights, would that also work with a window switch? Any help would be welcomed. thanks!
 

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