I have a 2012 Ram with DVD and rear sub. After searching the forums for the best way to add a new sub and amp, I went to my local dealer. He sold me a $12 kicker wiring kit to add on the existing sub leads and convert it to RCA plugs. No need to take the dash apart. I have a remote controller to adjust the gain of the sub and it works great. I hope this is info others can use to make it an easier install.