I installed the jensen system last weekend that works with my 1-CD Volvo radio, as I wanted the stock appearance. It was easy to route the attenna wire through the wagon interior trim, and the other steps were Ok, but I still didn't like connecting into the radio harness for the Jensen system. But it worked completely from startup, the only glitch was that I had to go Radio Shack to buy and additional audio cable. I also had to add some trim adhesive to make the antenna stick to the roof. But, zero commercials and lots of variety and quality music. if you drive as much as I do, 80,000 miles in the last 3 years, this is a godsend.