Well I reminded the motor For my 2245 Texas special! Only one problem: I forgot to take pictures of how it was wired to the rest of the engin!!! oops! Other than making the finishing touches with the horn, everything else is fine!
I think those motors have the armature wired in series with the field coil. However, the e unit will be between the armature and the field coil where it can switch the polarity of the field coil to make forward and reverse.
Sorry, my electrical reference material is packed up at the moment, and I don't remember the exact connections between the e unit and motor. Hopefully, someone else will be along in the near future with the proper details.
Here is the motor diagram with E-Unit, disregard the second bulb.
Rob
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