Hi guys, I really need a lot of help, First of all I'm just going to admit I know nothing about E-bikes or power assisted bikes. Recently I was helping my sister sort out her garage after the death of her husband and came across an unfinished electric bike he was building for his son. I have decided to finish the bike in his honour in time for his sons 16Th birthday but all I can tell you is its a 36V rear wheel hub 3 phase wire and they are yellow, green and blue and the which are already connected. and 5 wires connected to the wheel. The brakes are connected also, the throttle is 5 wires, 3 wires from the throttle is connected to the controller, red to red, black to black and blue to green, there is an orange and grey wire but don't know where they connect too, there is also a red push button with red and blue wires not connected up. I don't know the make of the controller all I can say is that it is old. I would be really grateful if anybody can tell me where the red button connects to and the 2 spare wires from the throttle (grey/orange) go. :?