Jeep AM/FM Cassette with CD Changer Controls - Upgrade Swap "1998 grand cherokee" Questions

1998 jeep grand cherokee volume on factory radio not working my stepson had just bought a 1998 jeep grand cherokee laredo and the radio wasn't working so we replaced it with a new factory radio which ...

...1998 Jeep Cherokee cd player does not work, displays "error when cd inserted, the radio works fine, can it be repair? it will read burnt cds, the only thing is that it will not play .mp3  format ...

...1998 Jeep Cherokee SPORT.. (not Grand).. Got the Scorsche connector kit.. and all works well, sound wise that is... the remote works as well.. the buttons and arrows light up but NO DARN reading ...

just purchased BV9998B Boss Audio System but doesnt fit my 1998 Jeep Grand Cherokee... ant solutions???? suggestions????? can you describe exactly how it doesnt fit??? did you buy the dash kit (here)