Help with mirror plz.

Hi i just bought some mirrors with the turn signal on them and i was wondering how to light them up. I tried using the fuse in the fuse box under dash but when i do they both light up when i only put one turn signal. Its weird. I think i might need to connect them to the turn signal in the front but if anyone knows of an easier way, plz let me know. Thanks

What kind did you get, Muth (http://www.kwmuth.com/)? Those are nice!