2001 chevy express van tach wire

I'm installing a Python 1400XP remote starter. I'm having a heck of a time finding a tach wire in a '01 Chevy Express Van. I tried every wire (not showing 12V) in the test connector under the hood - no dice. Well you know they shoe-horn the engines into those Van's, you can't get at the distributor area or the ignition coil or those individual ignition plugs at the cylinders (you know, the plugs with 2 wires, one plug per cylinder, you tap the non-common wire at any of the plugs, sorry I can't think of the name of them), and getting at the VCM is a PITA. I don't know how you would even do a simple spark plug change in one of these things. Anyway, there must be a tach signal wire under the dash inside the van. The guage cluster doesn't have a tach guage, but I pulled it out anyway to take a look, (maybe the wire is there for models that do have a tach....), but there's not even a normal harness going into the cluster - it fits into it's location and just plugs right into a mounted plug, I'd never seen that before.

So does anyone have some experience with these POS's?

you can try grabbing the tach wire from this location.

Tach - WHITE (-) @ Drivers fendor towards firewall in a black plug.

If all fails, set the unit in voltage sensing and that would work as well. good luck!

Are you talking about the test connector (the 9 wire plug)? Because I tried that white wire, and every other wire in that plug except the 4 that showed 12V, because obviously a tach wire won't ever show a solid 12 volt signal under any circumstance.