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Home >> Hummer >> 2008 >> H3 Alpha >> Repair and Diagnosis >> External Pages >> Different car >> Section 529 (Cellular System, Entertainment System And Navigation System) >> Description and Operation >> Radio/Audio System Description and Operation >> Radio Circuit Operation >> Radio Head Dimming

Radio Head Dimming

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Dimming and backlighting levels are determined by the serial data messages the radio receives.