Headlights are not bright enough...

SOURCE: 02 Jeep Grand Cherokee Low HL & BL Out?

Well if all those years your car was working perfectly fine with that blue fuse just get a new 1 and replace it. But then if the lights still don't work check all the wiring in the car that goes to the lights and if there is no problem go to a mechanic and ask him to look at it. That's all i can really help you with i'm sorry i'm not a mechanic yet or i would help you further.

SOURCE: 98 jeep tj, dash light/taillights/licence plate light don't work

disconnect head lights, and replace fuse. Then turn the light back on to see if it blow a fuse again. if not, plug on light in at a time. You might have a bad headlight???? then unplug that one if nothing happens. Then plug the other one in. It could also be a bad taillight bulb. I have had bad tail light bulbs. Do all of them, one at a time.

SOURCE: 1988 jeep wrangler 2.5 4wd

Needs someone to check for play in the items you have mentioned (though probably not the u-joints), plus the swaybar links, and shock absorbers. If you can get the vehicle jacked off the ground (with safety stands under it) you should be able to check most of these items with a suitable lever bar. Wobble the steering wheel side to side to check the tie rod ends, with the vehicle on the ground and one hand on the tie rod to feel for the clunking.

SOURCE: my 92 jeep xj headlights dont work

this happens to me every once in a while...just turn the lights on, flick the brights on and off a couple of times, and your lights should be back to normal. it sounds crazy, but it works for me all the time.

SOURCE: i am installing a new head unit and all new door

no, you have to ck each wire where it goes.