WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power Outer Mirror Switch Voltage Graph
Courtesy of MAZDA MOTORS CORP.
Connection terminal:
2D (+) ↔ body ground (-)
2F (+) ↔ body ground (-)
Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range