I picked up a Lab 400 this summer for 10$. When I got the speed was inconsistent and would spin sometimes or not at all. I cleaned the pots and it seemed to get better. I decided to clean the speed adjusters on the motor. I think I got carried away and after that it wouldn’t work at all or if it did it would spin backwards. I bought a re-cap kit changed those out and same issues. I’m pretty sure I fried the motor when I got carried away cleaning it. I used a Home Depot brand electrical lubricant after cleaning it and that’s when the trouble began. I found a similar DD motor on eBay that’s on order. It’s the Mkl-15si vs Mkl-15b. Wiring looks the same so I figured I’d give it a shot. I ordered new pots also. Figure worst case I’m into it for a 100$ and I could sell the parts. I’m stumped when it comes to wiring the pots though. According to the service manual. They are wired the same in Europe and Australia but different in the Us. Are the orange and yellow wires from the motor that supply the power through the pots or is it the brown wire? Any help or thought on how to get this thing back up and running is appreciated. Attached are the different wiring schematics
