[tom-t-rifik]

Yes Eddie, I have the 2.5" Borlas now with the Turbo, planning to add the MaxxFab downpipe, too. I haven't installed the OEM hitch wiring harness yet, but yes, it does run inside the car. It has plugs that connect it to the existing wiring harness for the lights and then run all the way down the passenger side under the carpet up to a connection box under the dash. It gives full functionality to all your lights, signals, and flashers. Instructions look pretty straightforward, but I'm definately going to get some assistance form a couple of mechanic buddies to install it.