Help with MSD ignition system diagnosis

the msd distributor will need 12 volts during cranking and running......there is a red wire that provides thats.....not the red wire that goes directly to the battery....
turn key on....red wire should have 12 volts.....crank it...red wire should have 12 volts...

large red wire goes to 12 battery source....large black goes to a good ground.....orange wire goes to plus side of coil.....black wire goes to negative side of coil...
make sure the distributor is plugged into the msd box....