i have a 99 TJ SE. when i bought it it had a shitty aftermarket radio so i bought a stock one for cheap. the radio doesnt seem to work though, it only displays the time for a couple minutes on and off. none of the buttons do anything but there is definetly power going to the radio. most of the time the thing is completly dead except for the couple minutes that it likes to display the time. is there some secret jeep radio quirk i don't know about?