How to Identify Stepper Motor Wires — NEMA 17/23 Coil Pairs (3 Methods)

How to identify stepper motor wires and find the coil pairs (A+/A−, B+/B−) on any NEMA 17 or NEMA 23 motor — even with no datasheet and no labels. I show 3 methods: no tools at all, multimeter continuity, and a quick spin test. If your stepper motor vibrates but won't turn, or only moves one direction, swapped coil wires are the #1 cause. This fixes it in under 5 minutes. ⏱ TIMESTAMPS 0:00 Why wire order matters 0:45 Method 1: no tools (shaft resistance trick) 1:50 Method 2: multimeter continuity 2:55 Method 3: spin test 3:40 Connecting pairs to a driver (TB6600 example) ▶ Full TB6600 + NEMA 23 wiring & Arduino code:    • TB6600 Stepper Motor Driver with NEMA 23 –...   💬 QUESTION: 4, 6, or 8 wires on your motor? Comment and I'll tell you the pairing logic. 🔔 Subscribe for hands-on electronics with zero fluff. 🛒 Multimeter I use (affiliate): https://amzn.to/3RZsM7H · TB6600 driver: https://s.click.aliexpress.com/e/_c3U...