Which hose? The high pressure hose? Here's roughly what I did on my 05:
1. Remove mech fan/efan/shroud (take out the 6 upper radiator support bolts, 10mm, plus 2 fan shroud bolts, 10mm)
2. Remove grill (just undo the tabs at the top and it should pull off)
3. Remove headlight
Here's where it gets interesting. You can either drill out the rivets to remove the whole radiator support or cut a hole out under the headlight. I cut a patch out under the headlight to get access to those bolts and then put the patch back in with silicone.
4. Unbolt HP line bracket
5. Unscrew it from reservoir (16 or 18mm flare nut wrench)
6. Unscrew it from the rack (16 or 18mm flare nut wrench)
7. Put Mopar O rings on new line (I used an Edelmann line, it's fine)
8. Reassemble
9. Jack up the Jeep, full reservoir to full line
10. Do 15-20 turns , near lock to lock, check the level every now and then
11. Start Jeep, top off as it ***** it down
12. Do some more turns and top off, let idle with the cap off for a few minutes. Keep checking the level over the next few days.
If you're replacing the cooler, same thing except you don't have to cut anything. If you use a Dorman cooler, I'd recommend adding a hose clamp where each hose connects to the cooler.