Does anybody know where I can buy a DRB III scanner that won`t break my wallet? My brake light stays on all the time on my `04 Ram 3500.I`ve gone through the whole brake system and can`t find anything wrong and the brakes work just fine.I replaced the park brake switch and that wasn`t it.I got a service manual and it doesn`t help much,so I figured I could buy the DRB III scanner for about what it would cost me to take it to the shop and let them use theirs. I bought an OBD II scanner but it won`t tell me anything.I got it just in case.I can`t seem to be able to find a DRB III anywhere.