[SoCal LS-L]

Just tested the MAF wire harness, and according to the SVX service manual.... the black/red wire is supposed to have 12 volts as the feed wire, and thw white one is supposed to have o to .3 volts as the signal. The black/red wire has zero volts, but theres a plain red wire going into the MAF that has the 12 volts. Is this just a screw up in the service manual?? The signal wire shows the correct .2 volts... so im assuming that the red wire is the actual supply wire. Is this correct?

Also can anyone tell me if theres a way to resistance test the MAF? I tried a search but came up empty... thanks.