On your 98:
Gauges (6-194 bulbs)
Map light (2-194 bulbs)
Door lights (2-194 bulbs) One for each door
Overhead light is festoon bulbs not for sure on number
The rest like your radio,climate control, headlight switch has to be soldered in but the rest i mentioned above is plug and play they are 194 bulbs and can be bought at www.superbrightleds.com i would personally get the 194 bulbs that has the 4 leds in one bulb. Hope this helps.