No
Halogen gas is in a Tungsten-Halogen Light Bulb.
This is probably a 9004 halogen bulb but to be sure just go to your local parts store and tell them that you need a new headlight bulb for a 1998 Jeep Cherokee.
yes you can
Yes. It just won't be as bright.
There are two hex/star screws above the headlight casing that need to be removed first. Then you slide out the headlight casing to expose the backside, there you will find the a medium sized slipnut around the Halogen bulb. Turn counter clock wise to release and pull back gently allowing the halogen bulb to come free of the headlight casing. Unplug the Halogen bulb (a flatheaded screw driver my be needed to pry the locking clasp) To install the new Halogen bulb reverse the above steps be very careful to NOT touch the Halogen Bulb itself. The oils on your skin can cause the bulb to blow out sooner when power is given to the bulb. Tighten everything back up and you are done...
Yes, the two voltages are in the same range category.
It is a double ended halogen bulb and I do not know how to get to it to release it from the lamp.
Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.
Halogen H4 55 Watts bulb.
It's a halogen bulb
Yes, the halogen bulb would provide about 30% more brightness (lumens) for the same electric power rating. So 70 watt halogen is about equal to 90-100 watt incandescent.
There is no direct cross over replacement for the halogen bulb. The pin configurations are different. The halogen bulb has pins whereas the LED lamp is an intermediate screw in base. The LED bulb uses an intermediate base so that it can be screwed into a regular household fixture as a direct replacement for the old incandescent type bulb.