Does anyone have the wiring diagram/pinouts for the 32 pin connector on the instrument cluster (2004 CL9)?

I've looked in the service manual but it's useless. The wiring diagrams don't show any useful information.

I'm trying to work out which pin controls the alarm LED. I checked all the pins with a multimeter but I'm only seeing 12v on one when the car is locked, and it still has 12v even after unlocking.