I installed the aforementioned kit (Model #PC-A30-04) this afternoon on my '11 JKU. I purchased it online from Extreme Terrain and the directions provided were fairly concise and accurate. The difficulty I experience was pulling the subwoofer surround away from the corner enough to bring the cable from the rear door to the wiring loom on a VERY cold day in an unheated garage. The coax included is indeed long enough to reach the center of the dash, either brought from the passenger side rail under the front passenger seat through the center console (my preference) or all the way to the front on the passenger side then across. I zip-tied the coax to the loom and took the time to run it through the fabric tube at the rear door. I still have to install the radio and tune the antenna (good directions included in the kit) and will post a follow-up then.