I cannot take credit for the knowledge behind this install. Most of the tips came from the old Siriusbackstage.com website. Your radio must be SAT ready with the AM-SAT button and fin for antenna. As previously mentioned, the dealer install cost $682.00; my cost from TSS with the TOY-SC1, SCC1 and SFA12M plus less than 1/2 hour of my time cost just over $210.00. A justifiable savings! The radio harness is located in the trunk on the passenger side. I removed the 5 trim pins and remove the interior wall, as well as the floor for easy access. There are three plugs, the grey is your antenna, the smaller white and blue aren't needed. As you can see, I used the wire support to hold up the SFA12M, plugged it into the grey connector, then ran it through the pillar then under the rear sill . Same with the data harness. I mounted the receiver and tuner on the underside of the sill easy access to change the parameters and if you need to change the 2 amp fuse. All wires are neatly tucked away. I hope this helps.