Hi Forum. I am trying to connect to a Lutron DVSTV 3 way to an Osram Optotronic OT40W/PRG1400C/UNV/DIM-1/J but I'm having a hard time. One diagram shows 4 wires, my driver/ballast only has three wires, brown purple and gray, and one electrician said he used 18/2 wire. Obviously the purple driver goes to the purple dimmer, gray to gray but where do I find the switched hot and neutral wires to the dimmer? My driver only has a third wire labeled PRG/NTC which is brown. I don't want to add a line level 120V wire and burn my entire system out by accident. Does the dimmer switch receive power only from the ballast driver or is there a line level as well? Tia.