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71 Posts
I have heard that you have to have the sales codes added for the signals/puddle lamps if your truck didn't have them originally. This is something that would need to be done by a somewhat knowledgeable tech at a dealership. I know when I talked to the dealership about adding codes for my EVIC cluster/steering wheel controls, the tech said they were available and I am planning on having them added so that when I get my towing mirrors they will hopefully work.