I recently came across a pro 2025 scanner, the other ones I've seen have the so for 12 volt power.jack. The one I have acquired has 3 wires hardwired. 1 red, 1 white, and 1 black. I know the black is ground, and I'm assuming the red is constant +12 volts and the white is switched +12 best volts. Does anyone know if this is.correct?