So, my interior light switch (dimmer control on the left side multi function switch) gave up.
The interior lights come on when I tap them on/off, all the lights (including the floor lights) come on when I open the door but the switch itself does nothing. My dash lights are stuck on a higher level of illumination than I normally like and during the day if I have my driving lights on, I can't raise the clock illumination to where I can see it. It used to be if I clicked the dimmer switch to one click before "all on" the clock would get brighter. Now nothing. Do I need to replace the entire swich arm? Any idea how much?
The headlight switch section works fine.

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My pics!!
'03 Rennie w/all Tupperware
Custom Roof Basket
Mopar Tubular Brush Guard
Garmin GPS V & Laptop w/Nav software
RAM products laptop mount
Maglite w/mount
Rear cargo bay tool cabinet
AllJs Rear Shelf
Rear receiver
250k miles!
LOST #CR051230

The multifunction stalk is very easy to change. If one function fails you will need to replace the whole multifunction switch (if you want the dead function to work again). I paid about $75 for mine at the stealership, but if you can locate an aftermarket unit it will be less $$.