I'd like to have a tach for testing purposes and setting idle speed and
whatnot, but not necessarily a permanent fixture on the dash. Are the
$30 cheapos found at Pep Boys easy to connect and disconnect?
Ideally, I'd like something that just clips onto a plug wire like a
timing light to determine the RPMs.
I've seen "dwell" tachs for sale on eBay. Will this do what I need it