On my engine the blue/white and red/white have the yellow indication sleeve on them. They were hooked up to the bottom pack. Wiring diagram shows solid red and blue to go to bottom pack and blue/white, red/white to top. Does it make a difference how they hook up? I assume they do since one set is hi and one is low voltage. Also on my bottom pack they had the coil wires hooked on the trigger terminals and the trigger wires hooked on the coil terminals. I just noticed that last night as the bottom box is inverted. Thinking that is why I'm not getting spark on the pack and wonder how much damage that did to the pack.