Help. I have a 2015 SLT Sierra. I have taken the mirror off and I am looking at my wire colors that don't match what you have here.....nor the location. I have 5 wires on on side of the connector and 4 on the other. On the side that has 4 there is a white, black, brown then yellow wire. (All are solid colors) on the other side are white with a thin black stripe, purple, white, red and green. Since I only have one solid black wire I figure that must be the ground but it is not in pin #5. I am not sure where to go for the power.....the solid purple?????