Automotive Wiring Harness Free Sample Automotive Aerial Stereo Converter Cable, DIN (Motorola Type) to Antenna Terminal for aftermarket radio antenna wire Does your aftermarket radio require an antenna adapter wire? You need an antenna adaptor whether you're swapping out your factory car radio or installing an FM modulator in a car that doesn't utilize a conventional antenna plus. Should automobile antennae be grounded? For your antenna to work effectively, your antenna mount needs to be properly grounded. Without a good foundation, you'll inevitably experience high SWR levels and terrible performance. Here is one Goowell GM factory radio with a mini barbed connector to an aftermarket antenna, 40-GM20; 1 - GM(R) Factory Radio to Aftermarket Antenna Adapter with Mini Barbed Plug. Car stereo head unit radio antenna interface converter; Fakra Z Male to DIN Plug and Fakra Z Female to DIN Socket Connector; 15 cm Coaxial Cable; 40 g Package Contents: 2 Cable (As the Picture Shown) Will I still require the SiriusXM adapter? I did require it for my opponent, to be honest. Will this fit a Pioneer head unit and the FM antenna on my 2012 GMC Duramax? It will fit both the black and white radio plugs, according to their chart. It should be fine if yours is black or white (cream). My 2015 Ram Promaster with an iMars head unit had no issues using it. (I had a white adaptor.) For poor radio reception, I purchased them. My wife's van now has an aftermarket radio that I installed, but the reception was terrible. Since they were all from Crutchfield, the adapters ought to have operated. however, after changing the intermediate wire, base, and antenna. I bought this one, and it solved the issue. wonderful little adaptor. I appreciate getting a CD player for my 18-wheeler. The buttons on my steering wheel used to function before I moved it over, but they no longer operate. When utilizing this aftermarket radio antenna wire in FM mode in a Ford vehicle, this feature is essential for Sirius Onyx radio. There was constant static interference when I originally installed the item as a standalone system. When I tried to install the Sirius FM adaptor I discovered that Ford employs proprietary connectors on the antenna and radio. I then came upon this kit, and these adapters made the system function flawlessly.Automotive Wiring Harness Free Sample website:http://www.shusb.net/wiring-ha....rness/automotive-wir