Heres a must read thread on hydraulic hoses/lines:
http://www.forabodiesonly.com/mopar/showthread.php?t=98731
If you havent replaced yours or been behind the back seat in a while... better check em. Those things get brittle and crack. Luckily when I went to put my new carpet in, I checked mine. As I pulled on one to inspect it... it cracked and fluid ran all over.
You can only imagine what could have happened if the new carpet and seat covers were installed and then the lines broke when pressuring up the system.