I´m still thinking about how I can test my tachs here. I have a 65 Mustang here with no tach and would like to use this engine as the bench. So would it be ok to take a 1.5 ohm ballast resistor between and put it in line with the ignition switch to coil +
I read on some other forums that some people don't use a ballast resistor and only put the tach in line from ignition switch to coil +
Is there maybe a drawing or something how to do it right, thanks...
Even non tach cars have the resistor wire in line from ignition to coil. You should be safe putting the tach in series with that circuit.
I have a diagram from Phil Severance for the Shelby tach for a 66, would you like that?
I think that could help, you have my e mail from last week I think, thank you.
Hope this helps