It being a 41, there is no post on the hey ign switch, but a steel wrapped integrated cable leading to the coil. I have changed to a new coil and spliced that line to the designated post on coil. As for running a wire from coil to battery, it got real hot and started some smoke in the dist cap. Remember, with the 6 volt alt now in, I have switched to - ground. What should I do with the coil? switch that polarity as well, right? And then which post would I run to the battery for that test? Thaks for the patient advice.