This will help, Thanks!

Yes, I did. Disconnected these as well, but still no communication. Will keep disconnecting ECUs this weekend, but was hoping to find a better way to find which was bringing down the system. Thanks!

I also have this same problem, left headlight exploded, dash light effects on instrument panel, replaced bulb, and it worked fine for a year, except that I was unable to communicate with my Allcomms or Faultmate, but my cheap OBDII tester works. Now, after sitting for months, the battery went...