Re: Stewart Warner 990B Tach Module $250
I've always had the tach updated with new electronics, and the box itself, had the components removed;it was just a pass through. The updated tachs are more accurate and trouble free.
Based on the components in the box shown its just an RC circuit for pulse conditioning/filter. If you're going to keep the electronics the same I would recommend changing the capacitor in the box.
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Steve Shauger
The Supercar Registry
www.yenko.net
Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website:
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