USA SPEC Auxiliary Interface
Connect a music player to your 2000-up GM factory radio
Our take on the USA SPEC Auxiliary Interface by Crutchfield's Tim Sprinkle
Enjoy maximum possible sound quality when you play your portable music through your GM's factory radio. USA SPEC's innovative DF-GM adapter lets you connect your portable music player directly to your compatible 2000-up General Motors factory radio. Just plug the adapter cable into your radio's CD changer input, mount the interface box, and you're ready to listen to your tunes.
And the news gets better if you also have another sound source you want to hook up to your GM's sound system, the DF-GM provides a second set of connections for an iPod, satellite radio tuner, or DVD player. You can switch between sources with your factory radio controls. Warranty: 1 year.
Please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle.
What's in the Box:
- Auxiliary interface adapter
- 4' CAS-F12 cable
- 7" CAS-G7i cable
- 18" XM data wire
- 4 Self-tapping screws
- Owner's Manual
USA SPEC Auxiliary Interface Reviews
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Compatibility: The DF-GM allows you to add two auxiliary inputs to the factory radio in select General Motors vehicles. The adapter plugs into the factory radio using the supplied cables, avoiding wire splicing and modifications. The DF-GM is designed to co-exist with a factory CD changer, XM satellite tuner, DVD system, or navigation system.
Control Mode: The DF-GM can integrate with the factory radio using either the CD changer or XM Radio controls. If the radio has CD changer controls but no changer, use that control mode and lose no XM functions. If the vehicle has a CD changer and XM controls, use the XM control mode and access the auxiliary input on the XM1 band, leaving the XM2 band unaffected, meaning you have access to your CD changer, XM tuner, and auxiliary sources. If using the XM control mode you'll need to splice one wire to the factory XM tuner.
Mounting: The adapter can be secured to any flat surface using the supplied mounting screws.
Connections: The adapter has two auxiliary inputs (Audio Input 1 and 2) on the left side panel. Each input consists of left and right RCA audio jacks. On the right side panel the adapter has a round 8-pin jack that interfaces with the supplied CAS-F12 cable. The opposite end of the CAS-F12 cable plugs into the CAS-G7i cable which plugs into the factory radio harness.
- CAS-G7i: Rectangular 12 and 24 pin Molex plugs on each end (insert between factory radio and factory wiring); Two rectangular 12 pin Molex inputs, for CAS-F12 cable and existing factory input
- CAS-F12: Rectangular 12-pin female connector on one end (plugs into CAS-F20 harness); Round 8-pin male connector on the other end (plugs into auxiliary input module)
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