[Azimov]

I just got an Iwaver board in the mail and did a cursory look at how it hooks up. I've never owned an Iwaver, so I snagged one of Namuna's pics and labeled what I could figure out. My question is, what is the white wire for? Everything else seems pretty straight forward (please post any mistakes) except that white wire. I wanted to have this guide on the forum so anyone could hook the thing up to any micro vehicle.