2014 3150RL originally had the Sony dvd, blue ray sound system in it.. We just bought this rig and all electronics were gone (tv’s, sound system, tv mounts) not ripped out thankfully. The 5-6 speakers are still there. Unfortunately there is no stereo, as the Sony had FM capabilities..can’t find a 2100, or 3100 that is reasonably priced. Has anybody found something to replace it with??? The plug ins are color coded for those 2 Sony units. I might just have to put a stereo on th speakers and sound bar on TV. ANY ideas would be appreciated