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I am looking for info on how GM auto dimming mirrors work. Specifically is the inside mirror and the outside mirrors independent of one another or does the inside reaview mirror control the outside door mirrors with regards to the dimming feature? If they are not controlled by the inside mirror do they have power on them all the time or just when the headlights are on? It would also be of value to know if GM uses a different wiring harness for a vehicle , such as a 2007 Surburban LT , that only has a auto dimming rearview mirror and a vehicle that also has outside auto dimming mirrors such as a 2007 Surburban LTZ. Is the wiring harness the same for these two vehicles or different? Thank You
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