Trying to install front hub motor on ebike rear hub exists already

Can I use one controller on 2 motors or do I need 2 controllers... I have front motor laced and mounted and a whole mess of wires .. please someone help!!

people generally use two controllers. If you wire your throttle properly you can use one throttle. However, getting the motors to run in a somewhat synchronous manner is tricky as one motor usually wants to go faster then the other.

Check out this thread.

https://endless-sphere.com/forums/viewtopic.php?t=18108

Yeah it's just not gonna work unless the motors are mechanically coupled.