It’s got a throttle assembly that has three led’s to show low, mid, and high voltage that acts as a battery level meter.

This is typically how controllers are made.,

The controller has a 48V power connection, a heavy red/black wire pair, but it doesn't turn on until 48V is supplied to a separate input. Your on-off switch should have two wires. One side is 48V and the other side supplies 48V to the controller when it turns on, The 48V side of the switch usually comes from a controller output, but on some bikes they wire it direct to the battery,

A bare throttle has 3 wires. Power (5V), Signal (1.2 to 4 V) and ground, but your unit can indicate battery level? A throttle that can indicate battery level has battery (48V in your case) going to it, Total of four wires with the 4th wire being 48V. The battery leds and the throttle circuits use the same ground, but are independent of each other.

If your throttle also has an on/off switch, now it has 5 wires, the 5th wire carrying battery voltage back to the controller when switched on. Some of these have six wires. but I've never seen one personally,


IF you cannot show a picture of your throttle, at least show where you bought it, Is it something like this one?

https://www.amazon.com/Throttle-Elec...%2C171&sr=8-39