3157 Switchback White/Amber3157 Switchback LED Bulbs White Amber (Pair) Bright. Clean. Built for GMT800 trucks. Upgrade your turn signals and parking lights with high performance switchback LEDswhite for running, amber for signaling. These are plug and play, error free, and perfectly matched for your DRL delete setup. Features: Switchback Functionality White running light switches to amber when signaling Built In Resistors No hyperflash, no error codes OEM Fitment Fits 3157
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