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White wire: pin #48 on the blue pcm connector. Be carefull of what you use to cut the bundle of wires open with....go slow and it will work. I tapped the window switch and the shift light at that spot. Set both for 4 cylinder operation.
Remember that the window switch provides a negative for the output not positive so the relay it drives should have the positive at it already and then the window switch will give the ground.
PM if you still have an issue. Also the pills are just resistors and you can approximate any value for the pills by the following:
rpm +1000= resistor value. Not so accurate in the upper rpm's but close enough to fool with....$1 for a bunch of them until you get it right
Also, is it easy to install the fuel pressure switch?
The fuel pressure switch is easy but the calibration is a little tough if you get the cheaper nos one (you need to adjust it with an air pressure source for a pressure value under the GM fuel pressure level). It goes on the fuel rail with a fitting and it is wired in series with the relay from the window switch. Don't have it interupt the solenoid's power.
I dont have any pics but the bottle fits in there with the roof panel. Just remember the bottle must be tilted and the correct orientation for the pick-up in the bottle.