Electronic ignation wiring

Ok, so I am studying up before the big project tomorrow. The wiring harness I pulled off of a 74 dodge van of some short has a 5 pin ecu plug. I know that the brown and white wire goes to the dist. and the yellow and black to the neg side of the coil but I am stumped on the other 2 there is a red and green wire left, I believe the red goes to the ballast resistor and the green is disregarded. Am I correct?