XFI Install -- Specific Wiring Questions

[Fastbird]

Using an XFI on a 93 Stroked/Turbo'd LT1. Retaining all accessories, to include A/C. Using a piggyback harness to retain stock gauges, ect.

A/C Questions -- I know that pin A24 requires a +12v signal contrary to the instruction manual. Planning on wiring that into the feed side of the pressure switch that goes to the A/C Compressor through a relay. This way if there is low pressure, the signal doesn't go to the A/C Compressor from the OEM computer, thus the relay doesn't close for the XFI Idle up signal.

Second, is the pin B11, the A/C Compressor Enable feature. Now this supposedly is grounded automatically by the XFI computer, and the ground is taken away once the Temp or TPS Threshold is reached. So would it be simple enough for me to just cut the ground wire for the A/C Compressor long and connect it to pin B11? Wouldn't that allow it to function via the stock computer as normal, but allow the XFI to allow the WOT cutout since the stock computer can't anymore?

Next....fan controls. I am retaining the dual fans but the XFI has controls for only one AFAIK. My solution to this was to wire both fans into the signal from the XFI. That a bad idea?

Last......sequential rev limiter. Ground the pin (forget off hand which one is the clutch input as stated in the manual) for whatever input you want to use. So essentially I could just use a push switch for launching on boost, correct?

Thanks in advance everyone.

[TurboNova]

1 good
2 yes
3 I have hooked two fan relays to the one ground output. You can also put a second fan on one of the analog outputs and use the cts and tps value to trigger the fan. Set the tps to 0 and the fan temp you want.
4 push button to ground will set the sequential rev limit, just click clutch, set the rpm you want.

[Fastbird]

Awesome! Thanks for the response. The fan part, since it's a piggyback harness, they're both through relays on the stock wiring to the connection to the one pin. If I find that overcools things, then I'll probably do like you suggested.