I'm having to use a modern-day 6V coil with the positive and negative power connections from the switch and to the distributor. The original coil has the connection from the switch connecting to the base of the coil inside the firewall. My plan is to extend the switch wire through the firewall and connect this wire to one of the 2 leads on the coil. My question is should this wire go to the similar negative lead of the coil, with the positive lead then going to the distributor? The negative ground circuitry leads me to this question. thanks in advance for the help.