Just rec'd MSD Digital Window Switch...installation questions.
 

Hey guys. I've never installed one of these b4. Here are my questions:

#1) What should I use for a 12V switched source? And where, exactly, is it located?
#2) What should I use for RPM signal input? Again...where?
#3) There are two other wires...one gray and one yellow. Gray is "normally closed. This wire will remove the ground source at your desired On rpm, and complete the ground circuit at the set Off rpm", and Yellow is "normally open. This wire will provide a ground source at your desired On rpm, and remove the ground at the set Off rpm". Which do I use?

Thanks very much!

http://www.dynomagic.com/images/diag...0SAFC%20II.jpg

1. Tap to pin 67 on the ECU.
2. Tap to pin 5 on the ECU.
3. For your VI, take the 12v pin on the VI plug (you can probably use one of those injector pigtails if you didn't get the VI connector) and connect it to a 12v switched power source (such as the ECU 12v ACC source [pin 67], etc). Now, take the yellow wire and connect it to your ground on the VI pin. The VI will close the butterfly when activated, thus you need to complete the circuit at the required RPM set point. That's why you use the yellow wire.

C'mon steve, I thought you could've figured this one out yourself? :wall: j/k

Thanks GoalieKeg, however, I figured it out on my own. Works great...now all I need to know is what RPM to set it at (hint, hint).

I used the gray wire (instead of yellow)...that way, it is closed at startup and opens at...whatever. That shouldn't be a problem, should it? It seems to work properly.