Quick question...
 

Hey I've recently received a mamba max and 7xl (used) for my maxx. The motors 's wires are red, yellow, and green and the mamba max's motors wires are red, white, and black. I'm not sure which color goes to which can someone help?

It doesn't matter which one you hook where. If the motor spins backwards just switch any 2 wires and it will spin the other way.