In the last foto, you highlighted a Blue wire that, to me, looks like it goes to the A- connection on the speed control board. That being the case the wire needs to be connected to the FWD/REV switch…You will need to trace the motor wires back to the switch and try and determine which connection it is on the switch….
Thats the best I can tell you for now…..A better look at the switch would help….but looking at the G0704 wiring it looks like it could be terminal 5 on the switch
The PM25 machine referred to above is a brushless motored version….a different beast altogether…
Edited By John Rudd on 02/02/2021 19:40:21