I own a 09 Ram crew and plan on installing 2 Alpine 10" R series under the rear seat and an amp under the passenger seat! I know some rams come with the the Alpine system already in them, mine did not. I am wondering if anyone knows if there is a wiring harness in the back to tap into. Thanks

 

You mean to tap into to be able to add the 10s and an amp? There will be no pre-existing RCAs waiting there for you. They never make it that easy. However, to make it work you will need to buy and add level inputs to your speaker leads that will convert the signal to RCA which can then be fed into and after market amp. However, just to also clarify, the Rams come with Infinity systems. Not Alpines.

 

Yup just google 09 dodge ram radio wiring harness, should pop right up!