Good info, thanks for this Cuzoe....kind of figured I would be getting into electonics again with this so I'll have to do some testing when I get some time later. The relay or a transistor /load resister might provide some options as well but I think I will have to keep the factory mirrors in order to keep the system happy. I was thinking of buying the wider angle mirrors but I guess that will not be possible without finding ones that have the BSM glass indicators as well. Oh well, nothing else to do during the pandemic. Thanks for the insight and diagrams. Glad this does not route through the BCM. I'll have to potentially run a higher voltage line though to power the new BSM will I not? Something that's switched through the relay? Wonder how much I need to draw. Could probably get supply through the fuse box somewhere....but would then need to resist the voltage.