2015 SuperCab. I replaced the front speakers with 6x9's and rear with 6.75" Kickers. I added a Rockford Fosgate Punch 50x4 amp. Now my backup alarm is intermittent and only comes through the factory tweeters that I left connected. Also, when I open the door I get a loud pop out of the speakers. Thanks. The factory system is basic, 4 door speakers and tweeters in the A pillars.

 

how did you get your signal wires to the amp? RCA's tap speakers? There are threads about the popping noise with aftermarket amps

 

The amp has a built in line out adapter. I used the factory speaker wires from the head unit to the amp.