red to coil +
brown to coil -
white to deceleration module, which won't be utilized, so leave it loose.
the other detail to address is the resistor wire used to reduce current to your coil when the ign switch is on. This is necessary for a breaker points ignition, but not for the prestolite. The resistor wire is connected to your coil + terminal and is wrapped in a cloth-like insulation material. Trace this wire to it's termination point on the bulkhead connector. Remove it and replace with a length of 14ga standard automotive wire. The other wire presently connected to your coil + originates at the starter solenoid 'r' terminal, and bypasses the resistor wire during starter cranking. With the prestolite ignition, this wire is not needed, but it won't hurt anything to leave it in place.