Hall Effects Sensor

[ProtonPozer]

I have a Bravo EVT 4000e Scooter with a 1000W Brushless motor that runs on 48VDC. As I am trying to decipher the wiring to adapt to a new (after-market) controller, I have a question for the forum: In addition to the five small wires (coming from the motor (Black/Blue/Yellow/Green/Red) there are also TWO SMALL WHITE wires that also come from the hub. They were hooked up (through a multi-pin) block to two RED wires. I assume it might be for a temperature sensor that my scooter does not use. But I am not certain.
Can someone please confirm that purpose of the two small white wires coming from the motor? Thanks.

 

[E-HP]

White wires are often either temp sensors or speed sensors. You can apply 5v to the red conductor and ground the black, then us a multimeter to measure voltage between one of the white wires and ground while rotating the wheel. If it’s a speed sensor, the voltage will toggle up and down as the wheel rotates. You can set the meter to resistance, and measure resistance between white and ground, and note the value. Then place the motor in a warmer place (out in the sun?), or a cooler place, and see if the resistance changes. If so, it’s probably a temp sensor (a common value may be 10k ohms at 25C).

 

[ProtonPozer]

E-HP, Thanks for the great advice. That sounds like something that I should be able to do. The original configuration had an analog speedo, so if it is a speed sensor, the pair was probably un-used.