that wire goes to the the ignition switch - follow colors - it actually increases the coil voltage, when starting, as it bypasses the resistor which normally gets voltage from the ign sw when running

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot