OEM Schematics

[DVT873]

Glad it helped. In poking around for the BodyBuilder wedsite I also found this.
https://volvotrucks.vg-emedia.com/ and a phone number. 877-865-8623. It looks like there might be a customer access like DTNA (Freightliner) or Cummins does with QuickServe but since I hardly ever see a Volvo I didn't spend much time looking. They don't make it easy. I don't remember how or where I found the DTNA linkI posted above. I beleive somebody sent it to me. I see a lot of M2's and busses so I needed the info.