http://www.modifiedlife.com/2003-hyundai-sonata-car-radio-stereo-audio-wiring-diagram/
putting in aftermarket radio and need color codes for 1998 Hyundai Sonata GL L4-2.oL
The actual compononts in the radio or for the power/speaker plug on back?
To reset the computer on a 2002 Hyundai Sonata, disconnect the negative terminal of the battery and leave it unconnected for about 15 minutes. This allows the vehicle's computer to reset and clears any stored trouble codes. After the time has elapsed, reconnect the battery terminal and start the car. Keep in mind that this process may also reset other settings, such as the radio and clock.
that's normal
The computers are placed behind the radio and the heating systems. They are screwed to the floor of the car. HAPPY UNSCREWING!!!
you need to pop out the frame and unscrew the radio. You will need a wiring harness for an after market stereo.
you must ring the dealer ,and be charming ,explain you have lost the radio code,due to its age its a great advert for the Hyundai dealership,and only a click of their mouse they gave me mine in 10 minutes they phoned me Hyundai services 01494 428600 my code was 2513 Also... Once you get the radio serial # (on the back of the radio or in the glove compartment) and the vehicle VIN number, you can call Hyundai Customer Service (USA - 1-800-633-5151) or (Canada - 1-800-461-8242) and they can give you the 4 digit code needed to reset the radio. This is the process I took with my 1995 Hyundai Sonata.
It will delete the pre-programmed radio stations.
Insert the correct code in the radio by way of the preset buttons.
I have my code I need to know what to do with it so my radio will work the battery was removed.
Radio presets.