The wiring diagram looks right to me. This is a guide on the wiring diagram of the full auto conveyor belt blasters.
Buffdaddy Nerf Prometheus Tear Down
Nerf nemesis wiring diagram. Use high current lipo cells to power the nerf rival nemesis with stock switches in conjunction with a simple mosfet based circuit that requires minimal shell modification. I hope it helps. Not currently accepting. Ive mainly seen the use of high amperage micro switches in this community but as tech in blasters microcontrollers brushless motors continues to expand and the motor arms race delivering new high draw motors to the scene its time for another mosfet guide without confusing the. It greatly helps with motor braking and with this setup you may get control over runs where the pusher never stops with a low torque pusher. By fan request i give you the stampede.
Starting with the stryfe and all its variants i hope it helps. D hope it helps sorry about forgetting the labels this timewonder how many comments i will get about it. Not currently accepting. There havent been too many so ill add mine to the list. Working on creating videos explaining the wiring of various electronic blasters. Stock internals on 3s.
Its time for an easy mosfet wiring guide. Im assuming you are getting some sort of double pull switch for the selector which should work well. Id also suggest that you get pusher motors with good torque.