if you have a connection direct to the coil +, it will be hot all the time and you won't shut it off with the key! that "2nd wire" should go to the ignition switch then to the coil, via the ignition resistor if needed - don't know about measuring the coil resistance, but it should say right on it if it does not need an external resistor, and most I've seen say if they DO need one ... LMC should have indicated in their catalog if it's internally resisted - if you ordered one for 67, it's likely internally resisted

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