David,
The Mikes Speedo isn't a plug and play. I did put plugs on the ends of the wires and tapped into the stock wires. I know others have done a better job than I did, but it's all hidden inside the headlight bucket anyway. The plugs just make it easier to remove should you have to. The idiot lights work fine, except that you will have to use a pair of diodes with the turn signals to get them to work properly. Psasak had the wiring diagram, but you basically wire the diodes in parallel with the indicator light on the speedo, otherwise all 4 lights will flash at the same time. The stock speedo indicator must have one built in. I suppose you could get the speedo without the idiot lights and use the stock lights, but not sure if D9 has a bracket for that set up. There's a new one for you D9, mini speedo with stock lights, and perhaps an ignition relo to boot. Hope this helps, but basically it was very easy to do. Let me know if you need more help, or there are others here that have done what I have done.
Fred