In the rebuild process of my '51 3100 I am now rewiring it. I will be adding turnsignals that require a 12 volt source, they are the ones that the switch is down on the bottom edge of the dash,somewhat out of sight.I also added electric wipers that need 12 volt. And, I am reinstalling an aftermarket heater that was in the truck when I got it that has a 12 fan. All of these I would like to power up with Key on only.What is the best way to do this? Thanks.
