WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
Connecting terminal: AC (+)-AP (-)
Measuring device setting: 1V/DIV (Y) 5ms/DIV (X)
Measuring condition: Vehicle speed at 30 km/h {18.6 mph}