I have a 2004 Hyundai Tiburon GT parking lights stay on constantly was driving on the road and car died and my speedometer and everything went dead like someone shut the key off. It won't turn back on

SOURCE: Entering a 2003 Hyundai Tiburon with no remote.

I belive all you have to do is put the key in the ignition and turn it counter clockwise. Hopefully that works for you.

SOURCE: 2000 Hyundai Tiburon will not start

There is NO possible electrical cause (within REASON) which would create the problem you describe. I assume you tried the Keyless Entry Remote to DIS-ARM the anti-theft system. If the ALARM system was activated, it will stay activated until it's de-activated by the remote (typical design feature). The best SOLUTION is to take vehicle into Hyundai an have the problem diagnosed.

SOURCE: 2003 HYUNDAI TIBURON bcm? Radio, clock, parking

More than likely that is your problem. It should be up under the dash on the drivers side somewhere but i could be wrong. here is a crappy pic of it.

SOURCE: 2003 Tiburon GT Remote Key

Seriously don't use the factory alarm system / keyless entry.

While my car was under warranty, the alarm malfunctioned and it wouldn't disarm. The solution was to have the car towed to a dealership and install a new BCM. This would have cost me over $1,000 - and it's not an isolated case.

Don't get a Hyundai key fob. Have an after market alarm / keyless entry installed. It will be cheaper & easier.

SOURCE: 2004 hyundai tiburon - why has my airbag light

See TSB 10006484 service notice for the air bag light.