good morning and thank you for inquiring with JustAnswer. The module you are referring to might be the Fusebox/GEM module assembly that is located next to the brake pedal. The PCM is located underhood, against/slid into the firewall on the passenger side, just to the right of the passenger side strut tower (as viewed from the front of the car)see image below. I hope this helps you identify the PCM and allows you to match up your wiring colors. Also as you asked, ppl/og is the purple wire with orange stripe and is not the same as og/ppl which would be the orange wire with a purple stripe. I am sure you will be able to find your wiring you are looking for once you locate the PCM, if you need any further assistance please let me know and i will gladly assist you with that
I cannot realy advise you on the modification of the wiring to monitor the sensor signals as tapping into as this requires some instructions from the kit you are trying to install. I have posted the R&R procedure for the PCM for you below. The connecter comes loose by loosening the 10mm bolt in the center of the connecter shell.
Removal and Installation
these diagrams might be of some help to you as well, this is the PCM connecter with pinout id's