If you start a thread on this in the 3rd Generation Electrical forum, you will get some ideas from members (likely from me too ), and other members can benefit from the results.
Here's a like to the forum - http://www.ramforumz.com/forumdisplay.php?f=188
Just click on the 'New Thread' button, and post the same info you put here.
brake light on
abs light on
air bag light on
no heater controls
speed sensor in rear end
looked for broken wires found nothing.
weird thing is i have a compustar remote start on my truck. when i use it to start my truck everything works untill i hit the brake peddle then its back to the same thing nothing works..