Originally Posted by THE TECH
If he is doing the mod, there isn't. All you are doing is removing the pieces from the stock one and putting them in the ZHP one. Plug and play wiring wise. I did zero wiring when I did mine.
You're right, if he's doing the mod, then it's all carry over. For some reason, I assumed he was purchasing an illuminated ZHP knob. For $120, might as well buy it rather than the trouble of carrying them over from the standard knob.