Last weekend I replaced the ribbon cables on both my drop down DVD monitors in my 2008 Dodge Grand Caravan SXT. Afterwards, when I drive it the center gauges flash all the warning lights for a split second, the Tripometer gauge flashes "No Bus" and the Speedo and Tach gauge drop back. Also the automatic open doors (side and rear) will only open about 12" and then close again. The only thing I touched was the DVD players! I can't see how this would be tied to the ECM or Gauges, please help before I go crazy!

I've attached a video of the gauges "blipping".

 

It's called the CAN data bus and it ties all the vans electronics together including your media system. A fault anywhere on the bus can effect seemingly unrelated systems. Double check the connections. What was the original problem? Can you reinstall the old harness? You could try to reset the bus by disconnecting the negative battery cable for 5 minutes. You may or may not lose your radio presets and you may need to renter your radio security code.

If you would like wire diagrams send me an email address to send them to via a private message. How? Click Cougar41 at left.

 

The original problem was that we were getting the split screen on both DVD monitors and they wouldn't play any DVDs. I did some research to find that the ribbon cables go bad and can cause this, so I ordered a couple in and replaced both front and rear overhead. Immediately after that I had this "gauge blip". It seems very erratic. I was going to try and disconnecting the main connectors on the outside of the DVD monitors next to see if that helps. The next step I can try changing back to the old ribbon cables. I will also try disconnecting the negative battery cable for 5 minutes.

Thanks for the response!