My 2002 Mustang Gt has had this issue since I bought it in 2008. I recently found a post on ford-trucks that has the solution. http://www.ford-trucks.com/forums/196821-odometer-blackout-problem-fixed.html I tried this this morning, and Bingo, it worked !! I spot soldered each contact for the ribbon cable connection, just to make sure. The above link provides a pic, pretty much says it all.
