Ok, am I fried here or what? I bought a tach for my 72 chevelle (aftermarket) Ran it for about three months and it started to not work.
I would shut the car off and than start it and it would work fine. Did this for several days, and than took it back to Checker. They said it was a cheapy tach and maybe thats why it is doing this. They refunded my money and I bought a (so called) better one, around a $100.00 tach.
Now this all happened last summer, now just riding around yesterday, the different tach is doing the same thing. Any suggestions would be great!!
Thanks, Jeff:confused:

check for loose wires, bad ground. make sure you have a rubber grommet at firewall.