I just work on this today on my 111 coupe. I don't know if it's the same on yours, but I had to remove center console with power window switches, then black shifter ball and three hex bolts that hold the indicator. There is a light bulb that iluminates semi clear plastic and that's how you see PRN432 at night.To access the bulb you have to pull four tabs that are holding plastic, take it out and replace bulb. Tabs are attached to the chrome and one of them broke off.