If you’ve taken apart the Dewalt660 past just removing the 4 screws clamping the end cap on, say to replace brushes or for the heck of it, you’ve seen the long thin terminal pins that run power to the motor no? I completely remodeled my Dewalt, replaced the end cap pieces with my own design incorporating aviation connectors for quick swapping but I don’t like splicing together mains wires, so I ordered these: