I have a better "test" for you....
Connect a 12v (+) to the red line a ground for the black and connect the sensors appropriately. now that you have your unit powered up place the magnet over the sensors to get a reading. Once a value is displayed....jump the white wire to first the (+) red wire (IT WILL DO NOTHING). Then jump it to the black lead.....IT WILL RESET TO ZERO!
Ps if you connected the white wire with the neutral lead that comes out of the plug to the cluster FYI that lead puts out a (-) signal!
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