I have the 3 volume set for a 98 Catera at home. I will look at the schematic tonight. I just replaced my coil pack. Bought it from O'Reillys Auto parts for $185 plus tax. It came in a Moog box but the part had a Bosch sticker on it like the OEM.
That way i can adapt a GM DIS to the catera. Those for some reason are muchmore rugged. For instance they don't take a crap if there is oil on the plug. The bosch unit dislikes that heavily.
The coil pack in my 97 Catera is labeled 1-2-3-4. The coil assembly is powered on pin 4. Cylinders 5 & 2 pin 1, cylinders 6 & 3 pin 2, and cylinders 4 & 1 pin 3.