Join Date: Dec 2005
Location: Cedar Rapids, IA
Re: wire old tach to new hei dist
Do a search. Also in the elec. basics sticky Jim has shown how to make a simple filter. My 69 did not have an original tach when I bought the car. I did a search about installing one in place of the original fuel gauge. What I found was that some that hooked up their original stock tach to a HEI ingnition was that it messed it up. But, that by using the new aftermarket stock type tachs it was not an issue. That is what I used and have not had an issue. So I wouldn't want you to mess up your original tach. They aren't cheap IMO. I am running the MSD large cap HEI dist.