Hyundai tiburon cd player power problems

did you use a aftermarket wire harness made for your vehicle? If you did then there is a wire marked 12v constant that wire will be yellow that is what you are missing hopefully you did not cut the factory plug off of the vehicle. the aftermarket harness plugs into the factory harness

What stereo did you use as a replacement? If you used a aftermarket (kenwood, sony, etc) cd player, you need to use the proper adapter harness. These cars have a build in theft deterrent system that involves the stereo. So, when you replace the stereo, a component of your anti theft system is missing. The use of the harness gets around this feature somehow, and allows you to use aftermarket CD players. Also, ensure that no wires are getting pinched behind the stereo, and that all your connections are soldered and shrink wrapped to avoid any future problems. I have provided a link for the correct adapter harness to your vehicle.
http://www.amazon.com/Stereo-Harness-Oldsmobile-wiring-installation/dp/B000KL2PEI

Generally, the way I put an aftermarket cd-player in, is to use a new 'harness adapter' that connects to the old harness and has all of the wires color coded and labeled for easy installation of a new radio using wire nuts. I wouldn't try to cut into the existing harness, without knowing what was what.

What's the 'little plug thing' off of the grey wire?

You don't required to search for the wiring diaghram. These are standard in the wiring harness from the manufacturer. You need to look for the socket which may folded inside the console in front of you. Fix the audio in position and connect the cable socket for your new audio.

you might have blown the fuse go to your fusebox on your car and check to make sure each fuse is still good replace all the bad fuses(if any) and then it should work

Yes, that would be fine, make sure you solder the wires and tape well or use shrink tube on the connections.

careful not to cross the speaker wires you will blow the channels. check wiring diagram and ground wires
on the body from the radio. You may have the LED power hooked up but not the main power for the radio,
hope this helps

I had this problem with my 2003 Tiburon SE. Dealer couldn't diagnose the problem - they said everything was working fine. By trial and error I discovered that when I disconnected my aftermarket CD player, the car was fine. Re-connect the CD player and the problem would occur intermittently.

I think the problem was that the CD player was drawing too much current from the car's electrical system, thus through the Body Control Module, or BCM. The BCM would overheat and shutdown, turning the engine off with it. Shutting off the ignition and re-starting the car would reset the BCM and all would be fine for a while.

Disconnect any aftermarket electronics you may be using (stereo, cell phone charger, etc...) and see if that helps.

Good luck.

are you a self mechanic ?

Any car stereo shop can help you. Be nice to them,they can help you, maybe charge a few bucks. Keep the faith.