The compass bulb is # MB898179-I checked with my parts guy at my local dealer that I buy from, as well as the extra bulb I have when I bought 2 bulbs last year, with one as a spare for the compass backlight. Built-in bulb holder, with a green sleeve over the bulb. The bulb/holder is of the "Twist out" style like on many other Montero bulb applications. Hope this helps you out

'92 SR Montero, Green, with 31" Yokohama Geolandar A/T Plus Tires, Mitsu factory fog light kit, on-board air compressor,Sony Radio and 10 disc changer. 213K and counting.....
Stock & Happy otherwise