Originally Posted by Mike S
The black bar "in front" of the gear is a bearing retainer. Correct?
Is the electrical connector from the Mazda distributor also?
No, it's an Amphenol AT series connector, interchangeable with Deutsch DT series. I really like 'em. High overall quality, and the terminals crimp to the wires just like an oversize D-sub pin. Even the tool is the same, but in a larger size.
As an old car guy, I know that most electrical problems are really connector problems.