One wire is positive, one negative and one is the sensor wire.
When on, I get 8 volts from positive to ground and 3.75 volts from sensor to ground with the sensor plugged into the speedometer head.
Spinning the hub there is no change in the sensor voltage.
The sensor read open on all three wires or millions of ohms.
So what do you think, is it a bad sensor?
Here is a couple links on testing them.
https://www.doityourself.com/stry/troubleshooting-a-vehicle-speed-sensor
https://www.speedwaymotors.com/the-toolbox/testing-2-and-3-wire-speed-sensors/28754
When on, I get 8 volts from positive to ground and 3.75 volts from sensor to ground with the sensor plugged into the speedometer head.
Spinning the hub there is no change in the sensor voltage.
The sensor read open on all three wires or millions of ohms.
So what do you think, is it a bad sensor?
Here is a couple links on testing them.
https://www.doityourself.com/stry/troubleshooting-a-vehicle-speed-sensor
https://www.speedwaymotors.com/the-toolbox/testing-2-and-3-wire-speed-sensors/28754