Yes if it was the dimmer switch all interior lights would be afected.
It is only the radio.
The radio itself works fine only the disply is affected.
It would not be worth $900 the fix a factory radio.
Could get complete after market for less.
You multiply the number of spark plugs on the right side by the number on the left side then divide that by the number of windows then subtract the number of spare tires you have that will give you the number of cylinders.
:haveabeer: