Get the best sound quality possible with this SIRIUS XM Radio FM Modulator by Metra. This adapter installs behind your car stereo between the FM antenna and the car stereo virtually eliminating static. If you live in an urban area with high FM-station density, interference from neighboring or weak FM stations can often creep in and create static. The FMMOD03 relay device makes a direct, wired connection from your SIRIUS radio to your vehicle's stereo, shielding the system from intrusion by over-the-air FM stations. This part is fully compatible with all SIRIUS XM Radio portable and plug and play receivers. Included with this modulator is a set of RCA to mini-jack cables that allows you to connect the modulator directly to your vehicle cradle.