Would a 5-wire throttle be able to be wired to a previously 3-wire throttle system ?
Yes a 5-wire throttle can usually replace a 3-wire throttle by connecting the three wires of the 5-wire throttle that are for the throttle's speed function. The other two wires may be for a battery indicator or switch depending on what type of 5-wire throttle is installed.
I just bought the 24v DC 250W Brushless controller(SPD-24250BLDC) from electricscooterparts.com to replace a burnt 24v 250W brushless controller on my old ebike(Ananda EB2420DL Chinese controller). I have finished connecting the 3 motor phase wires, 5 motor hall sensor wires, and power wires to battery. The only connections left are the throttle connections. My original controller has 5 wires(Orange, Grey, Red, Blue, Black), and the new brushless controller I purchased from you has 3 throttle wires(black,green,red) and 3 Speed control Wires(Orange, Black, Blue). From the included pictures you can see the 5 wires on my original controller attached to 6-pin harness connector, and also the 6 wires from the new controller as well. Can you help me make sense of how to connect up the throttle?
On a side note, the motor phase wires on the original controller do not have any identification to identify which one is the U,V, and W Wire. Based on the picture showing the Blue,Yellow,Green motor phase wires on the original board. Is it safe to assume that the motor phase wire colors(Blue,Yellow,Green) on the new controller should be wired to the corresponding colors on the original harness?