Brain fade I suppose, and not near the car or FSM.
Want to use a 12V switched terminal for an added tach, and since I'm running the coil & neg leads to the engine, I'm thinking running the tach power to the SR would be clever & easier than pulling the ign switch. Also easier to deal with should I later remove the tach.
'68 Road Runner 4-speed car if that matters.
Thanks.