I have figured out the datel. My particular model has six pins on it. rnunes model has six tabs in the same location. On one end there are two pins. On the other there are four pins. If you lay the model on it label so you are looking at the bottom orient it so that the side with two pins is at the top and the side with four pins ia at the bottom. Ignore the top two pins. These are for a "logic enabled shutdown. Since I have the 5V to 2.5V model I don't need this. The four pins at the bottom are what matters. To hook it up in the I-opener:
From left to right:
Pin 1 is Voltage in. Rnunes takes his from the Q16 pad. For the 5V model I take power from the left hand pin of Q30. Between Pin1 and Q30 I have a 5V relay coil installed for a couple of bucks from Radio Shack and controlled from the top two pins on CN12. Powers on and off with the I-opener on/off buttom.
Pin2 is the negative connection for the Datel. I attach it directly to the screw pad to the left of C154.
Pin4 is the Datel's power out pin. It will connect to the tops of C154 and C155. Place your favorite votage divider between this pin and C154,C155 to get voltage lower that 2.5.
Pin3 is the output return for the Datel. The third leg of your voltage divider goes to this pin.
Don't forget to take Q16 out of the loop by removing it, lifting, or clipping the two left hand tabs.
I chose the 5V to 2.5V for a couple of reasons. The first, because it was available and the 3.3V to 1.6V was not. And for true overclocking, not just maxing out the top end of a mobile processor, a higher voltage is necessary. And while I can drop the 2.5V lower easily, I ain't figured out a easy way to increase the top voltage that the Datel provides. More info and pics ( if anyone is interested ) later this week.