Wiring a MSD Ignition and 3 Stage Retard HELP

is there 2 wires comming off the distributor? I have the full msd set up and the only violet wire for mine is off the distributor (msd pn8479 pro billet dist.) and the violet wire plugs in with the (6a ignition)
Your set up is differnt then mine but ill just quickly write out what colors go where off my diagram... it might help you
(6a ignition)
Heavy black to battery negative
Heavy Red to battery positive
black to negative on coil
orange to positive on coil
Red to switched 12v
white (connects to yellow wire of timing accessories)
Green and Violet to distributor

you have 6al which i think has the same wiring set up but with an extra wire? I could be wrong. Let me know if you need any more help im not sure if the infomation i gave you would help but i guess somethings better then nothing lol