The accessory terminal will be hot in both the Ign. and Acc. positions. Run the power to the coil from the Ign. position, and power everything else from the Acc. terminal. If the switch has a spring-loaded "start" position, it will switch off accessories during cranking, to provide max power to the ignition system while the starter is running.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!