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I purchased a set of Upgreaded mirrors from am-autoparts for my 2018 Yukon slt, installed the mirrors but I cannot get the functions to work, the only one I can get to work is their adjustment, cannot get the heated function the power folding signal or LED Marker, contacted am-autoparts the only reply I get from them is a standard reply, I just sent a email to Chris cam that Taiwan manufacturer of these mirrors but I'm not holding my breath on the response I get from them what I need is the color codes of wires responding to each function.

need help Al