Piece of **** Mallory Distributor

Are you running a ballast resistor? If so you need to hook up the red wire directly to the same connector where the ignition switch lead hooks up to at the ballast, not the coil +. Otherwise you don't have a full 12 volts to turn the dizzy on. Other wires are like you have. green to coil negative and brown to a good clean ground. I also always check the plug with a multi-meter to make sure all the contacts are good. Been running Mallory for years and never had a hicup.