Good evening,
Got back tonite from the seller's house. The woofer came mounted on a factory "board," the rear panel of the back of the wagon. We found that the harness looks like it runs to the fuse panel on the driver's side rear. (possibly up to the head unit.) It connects to the speakers in the very back rear pillars, then the the plug goes to the amp. There was a bracket attached to the brace holding down the battery, I traded him the plastic "nut" holding down the spare tire. There is also a piece of styro that will hold the jack and tools. I'll send you the harness part number, am going to order it from the dealer, was about $48.00. The guy was going to tear his car apart to grab the harness, I bought the sub for $300.00