No problem Curt! Here's that link again for the replacement circuit board: http://willcoxcorvette.com/product_info.php?cPath=1810&products_id=26788 It didn't work the first time i posted it, they are $58 and when you order you have to put in the comment box to note that your ordering for a chevy...
With Kevin's help I got my tach fixed and now its working as it should. I sent him pictures of everything and he said he was going to add it to the How To Almanac.
Hey I just joined so I could see your pictures because im trying to fix the one for my 78. Mine looks a little different than yours and mine does respond to throttle but it reads way too high. In your case I would buy a just buy a replacement circuit board from...