I installed a Kenwood KDU 252 from Best Buy yesterday in my 1997 TJ.
Tested it and it worked.
Today I go to finish the install and disconnect the harness, but this time I didn't disconnect the battery negative.
I get the kit and cage installed and plug everything back in.
Power comes on, it functions-but no sound.
I checked the connections 5-6 times.
Check the fuse behind the glovebox and at the back of the radio-both 10 amps and both fine.
I checked through the audio menus and tried to make changes, still no music, no static, no noise whatsoever.