so I have a 2008 f150 xlt it was the work truck model...so I just installed a new aftermarket 2din radio. But the problem I am having is that the radio works but there is no sound out of the speakers at all...I triple checked all the wiring and made sure it was hooked up right...I cannot figure out why there is no speaker sound is it maybe a fuse or a factory amp line or something if you guys know can you please help thank you.