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The is lights are LEDs and I'm not 100% sure but I don't think u can just buy the light I think u have to buy the whole mirror ( I did the upgrade on my express I had the dealer active the puddle light with Leb and lec sales code) the mirrors are plug and play other then that if u get a set with power fold u will need to change out ur buttons so u can have that feature as well
The sales codes need to be added by the dealer.
Do I run a wire straight from the turn signal to the mirror what about the puddle lamp what color wire is for the turn signal on the mirror