Dayton Gear Motor 5K942 vs 5K942D -- Same?

I burned out a Dayton 5K942D and ordered a replacement, clearly specifying the D at the end of the model #. Instead I received a 5K942. I can easily see there's a difference in the wire connections. The original motor was purchased 6 years ago. Have they been replaced by at 5K942?

As something of an aside, a friend told me that there's sometimes a red button on a motor that will help 'restart' them if they are stuck--of something to that effect. I certainly don't see one on these motors. What's the story about the red button?

Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet
--
"It is with things that you can neither see nor feel
that it is important to guard against flights of
imagination." -- Antoine Lavoisier, Chemist, 1743-1794

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