<p><img src="https://i.stack.imgur.com/xE1dA.gif" alt="enter image description here"></p>

<p>This is what is happening to my motor. Any suggestions would help. 
1. I have tried adjusting the trimpot. 
2. Rewire the connector to match the one on the motherboard.
3. Anything else I found on the internet.</p>

[{'answer_id': 5343, 'author': 'mac', 'author_id': 9134, 'author_profile': 'https://3dprinting.stackexchange.com/users/9134', 'pm_score': 2, 'selected': False, 'text': '<p>If the one in your question is your <em>complete</em> code, a possibility is that your computer is just buffering the output for the serial port, withholding it in memory.  Try to add</p>\n\n<pre><code>ser.flush()\n</code></pre>\n\n<p>after your last line.  This command will... well... <em>flush</em> anything into the buffer through the actual connection.</p>\n'}, {'answer_id': 13840, 'author': 'Davo', 'author_id': 4922, 'author_profile': 'https://3dprinting.stackexchange.com/users/4922', 'pm_score': 0, 'selected': False, 'text': '<p>Sorry for the late answer, but with Repetrel v3 and later, we have the option for you to configure a secondary COM port, and relay G- or M-Code commands from your other source through the Repetrel software to the printer. Please contact us for assistance.</p>\n\n<p>Note: I work for Hyrel 3D.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/5346', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/9741/']