4.3 Supercharged Chevy

[Homeoboxter]

For the A/C: there are at least two points where you can hotwire the system: the A/C pump relay, and the A/C control unit. Based on the circuit diagram probably you can trick the control unit such that it thinks the engine is running. Do you have the Bentley service manual? I`m uploading the respective diagram here, just in case, I hope that`s allowed:




Hope that helps.