Re: '48 Ignition Switch

Posted by HH56 On 2012/11/9 9:33:30

You can use the coil terminal off ign switch. Since you are converting to 12v, plenty of power will be available for the coil if something else is also added to the terminal. It's open unlike earlier switches where that terminal and wire was enclosed in armored cable.

Not sure how the GM conversion or ign is going to change the stock wire run to be able to use the wire already in engine compt. Any ballast resistors involved?? Normally starter feed would come from the GA terminal on ign sw to avoid loading down the coil supply voltage in any way. The original starter circuit was a separate wire off GA terminal to the carb switch and then to solenoid. I'd just keep that arrangement except run a short wire from GA to button and then to solenoid.

Believe your switch only has the single "on" position turning to the right of center off. If that is incorrect and yours has three positions, then in switches which had an "on" position to either side of center, the coil terminal was only active when key was turned to the right. If that's the case it would make sense to use the coil terminal.