Autozone has some repair manuals online with free access. Lucky for you, the 1997 Jeep just happens to be one of them! If you click the link below, it will take you to information on replacing the turn signal assembly:http://www.autozone.com/az/cds/en_us/0900823d/80/15/43/af/0900823d801543af/repairInfoPages.htm
You may want to bookmark this link, as it will be useful for other repairs you want to do to your car... just choose the category in the drop down menu on the right and the list of topics will show beneath it.
If this helps, please click Accept so I may receive credit for my effort.
Apologies - thought you were talking about the turn signal assembly on the steering column. For headlight assembly removal, see if this link is what you are looking for:http://www.wjjeeps.com/lamps/headlamps.htm#LAMPREM
(maybe you can use the Autozone link to fix other problems with the car!)
Whew, working for it :)
One more shot - see if these help....