2018 Silverado 1500lt i purchased the oem wiring harness for tow mirrors as the didn’t come with em! I bought a set of tow mirrors by sanooeer so when i installed them the driver side turn lamp was white these are (switchback) and the other lamp was amber on passenger side so I took the driver s door panel back off and the little small 4 pin plug on the harness I took it apart turned it completely around and now it’s amber as before it was white so anybody know why turning this 4 pin would do that?