so awhile back I installed a radio in our 99 kia sportage. worked great till the vehicle was jump started then all there was static then nothing. Radio still worked but no noise from any speakers. I figured the radio was shot. Got another radio and same thing. So I started to look into the issue but cant figure it out. I hooked the radio up out of the vehicle and works fine. So is there something in the radio's system that controls the speakers? I have temp speakers hooked up in the kia and it works fine but I would like to have the normal speakers hooked up or I will have to rewire and poss. replace the speakers. Any help would be appreciated thanks.