ok. so for the 1998-2001 ram models the gauge light sizes are 5 of the pc194 twist lock bulbs. 5 are for the actual gauges. there are also 2 of the pc 194 that function as the blinkers. the high beam light is the t1.5 twist lock bulb. not what the website says. all other warning lights are the t1.5 twist lock bulbs. but there are some warning lights that are leds and are soldered to the instrument cluster. dont try to remove these ever! i used WLED-xHP10-DAC for the dome light. i used WLED-xHP15-T for the map lights. it was simple. i did have to move one of them in order to get it to light because of the direction, but it was really easy. all in all i think it took about 10-15 minuites.
all my leds came from superbrightleds.com. pm me if you need any extra help doing this on your own truck. and good luck
these links are the 3 different bulbs for the dome, map, and instrument lights. in that order.
and this is the vehicle bulb finder. http://www.superbrightleds.com/vehic...stem/15/846/42