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I did connect the field wires to the carbon brush holders correctly. The bottom wire of the bottom field coil, goes to the right carbon brush holder and the top wire of the top field coil, goes to the left carbon brush holder. I did take the motor to a expert vacuum repairman at a local vacuum store. He reassembled everything, except for the wiring connections to the foot witch assembly, that has yet to be looked at since I was the one who connected them myself, before I took it in for a look. The foot switch was already assembled by me, before I took the motor to the vacuum store. He then tested the vacuum and the same thing happened, the motor ran very slow, slower than normal. He and I decided that the issue with the running of the motor is now not the field wiring to the carbon brushes, which has been corrected, but rather the electrical connections and wiring hook ups to the foot switch assembly. Does anyone think that maybe the real cause of the issue, is the wiring connections of the foot switch. Are the wiring connections to the foot switch hooked up in the wrong way, in reverse? If so, how should I properly connect the wires to the foot switch. All I know is 2 wires go to the headlight harness and the other 2 go to both field coils, but one of them goes into the safety switch assembly. How should I connect the wires properly, since there are no black and white colors of wiring, all wires are just black.
From Liam, I will post pictures as soon as possible.