Recently reconfigured power to coil to get full 12V for Pertronix unit. As a result, no longer have lead from my tach connected at coil "+", so tach does not currently function. I did not want to reconnect it because I was unsure of consequences of connecting an 8V source on top of my new 12V source to the coil.
My question: a mechanic told me I could run the tach lead to the
"-" post and still pick up tach signal ok. Anyone know if that is true? I'm nervous about connecting an 8V source to the negative coil post - not interested in frying something.
My question: a mechanic told me I could run the tach lead to the
"-" post and still pick up tach signal ok. Anyone know if that is true? I'm nervous about connecting an 8V source to the negative coil post - not interested in frying something.