I have a 97 Oldmobile Aurora. A week ago my enitre dash went out for a few minutes then came back on. A few days later it got progressively worse to the point now whenever my headlights are on, the entire dash and taillights go off

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There's a running light controller under the dash next to the steering collum that cost a little over $100. It fails and it's the only way to fix it right and it might happen again too.

have your charging system checked to make sure alternator is charging to specs, also make sure no light are left on, (trunk light ,glove box mirror light.it sounds like you may have a draw somewhere, may be alternator or something is on, hope this is helpful.

check the trans fuse...it blowing, will keep the car in limp mode, either that, or you need to replace Solenoid B, 1/2 Shift Solenoids...

You have a bad ground. The frame of your Jeep, (As in most vehicles), is the main ground source.
All ground connections go to it, via some sheet metal, or directly. The ground wire from your battery will be connected to your frame.

Your headlights will pull at least 30 Amps. So will your taillights when the brake, and main lights are on.
Since you have a bad ground, (Or Grounds), your ground source cannot support both headlights, and taillights. Your dash lights? They should be on the same circuit as your taillights.

How to solve this problem?

1.Start with the the two ground straps, that are supposed to be connected somewhere on the back of your engine, and lead up to the firewall. If you have had any mechanical repair, and it involved removing the engine, or a cylinder head, (Or two if you have a V6), the mechanic may have failed to connect Both flat ground straps back up. Or one, or more, of the ground straps are loose, and/or corroded at the connection to firewall/engine.

2.Checked okay? Go to the front wiring harness. Out of this harness will be wires going to the headlamps, and turn signals. There will also be one, or two wires that are a ground. They should have a round metal terminal end on them. They will connect to the front sheet metal somewhere.
They may be loose, and/or, have corrosion under the metal terminal to the sheet metal connection.
Remove the terminal end, and check for corrosion. Use sandpaper, or steel wool to clean the contact surface of the sheet metal, and the terminal end. Lightly coat the terminal end with a corrosion inhibitor you can buy from your local auto parts store. It's in a spray can.
No problem so far?

Check each headlamp socket for corrosion. Means removing the headlamps. (Yes I know. Pain!)
If your Jeep uses Krypton bulbs, don't touch the bulb with your fingers. Use rubber gloves, or a Very clean rag. The oil off of your fingers will greatly diminish the life of the bulb!
Okay so far?

Go to the rear of the vehicle. Check the rear lighting harness, and it's ground connections. Check the lamp sockets.

Not all replacement parts are good. I would guess that the new ignition switch is bad. Its also possible that the wiring harness is loose where its connected to the ignition switch. You could try jiggling the wires.

it sound like its mis-fireing new spark plugs

If signal lights are working, probably a failing headlight switch. Even though fuses seem OK, you can try replacing the appropriate fuse.

I have, when I first bought my 02 Liberty. It ended up being a faulty ECU. ECU is the computer brain that controls the whole car. I had it replace and it never happened again.

the alarm is activating when he locks it and for some reason the key or fob isnt deactivating it..check the disarm switches in the door