Alright I made some progress tonight and was able to map a lot of ID's from my vehicle(2005 Chrysler 300, 83.3Kbps bus). A lot of the items seem to have a "default state" that is constantly being transmitted. Like traction control. If I press traction control off on my dash I see 0003 0420800050530000 7. If I have traction control on(standard setting, no dash light) and send the prior command to turn it off I get the dash light for about a second then it goes off again and 0003 0020800050530000 7 is transmitting. Similar thing for windows, sun roof, etc. So it sounds like to get access to to some of the things that I want MITM is the only choice. This is the wiring of the "B" bus on my car. Can I tap in anywhere here? Or should I tap at say the FCM? Oh and I attached a picture of my newly controlled dash! https://www.dropbox.com/s/ngiq6ta092xp1sr/IMG_0934.jpeg?dl=0
https://www.dropbox.com/s/s3m53n1xjgg0jbv/Screen Shot 2016-04-11 at 9.27.15 PM.png?dl=0