The OEM radio for your TJ was also used in a variety of Chryco vehicles. Paid $25.- at the auto wreckers. Good AM/FM - CD unit. My '04 Sport has the 7 speaker system.
The PO had installed some unit with an un-readable clock, strobe type lights flashing all colors, and controls so small and delicate you had to be stopped to change channels. It looked like a fk'n carnival/midway at night.
Apparently a lot of Jeepers like that kind of distraction and aggravation . . . .