Installing a Cycle Analyst Universal Display to any DIY BLDC Motor Project

During the bench test, I forgot to show how to connect a Cycle Analyst display to your high-powered build, so I’ll explain that now. For builds like a 5kW setup, you’ll need a Cycle Analyst that supports high current—not the regular version—because it includes a high-capacity shunt capable of handling the increased load. The shunt has a side with labeling, which indicates where wires connect even though the terminals aren’t explicitly marked for positive and negative. From the Cycle Analyst, three wires matter: the blue, black-and-white, and red. The blue wire connects to the side of the shunt with writing. The black-and-white wire connects beside it. Then, the battery’s negative terminal goes right next to the blue wire. On the other side, your controller’s negative terminal connects to the remaining open shunt terminal. The battery’s positive wire goes directly to the controller’s positive input as usual, and your elock switch (the controller’s ignition or safety switch) must also be connected inline on this positive side.

Next, the red wire from the Cycle Analyst needs to be extended—it's short out of the box—so create an extension and plug it into the same terminal as the battery’s positive connection on the controller. Make sure to tighten all connections securely using a screwdriver to avoid loose connections that could cause problems. Finally, the controller’s negative terminal should connect back to the shunt on the side opposite the battery ground. This final connection is essential to complete the current loop. If you don’t have a plug ready, you can temporarily use alligator clips, though that’s not recommended for a permanent setup.

Once all connections are made, power on the battery. If everything is correctly wired, the Cycle Analyst will boot up, displaying the basic screen. From here, you can begin riding, but there’s also room to expand your setup using the auxiliary cable. For example, you can add a potentiometer, a speed sensor, or other advanced inputs for more customization. We’ll cover those in a separate video. But for now, this is the proper way to hook up a display to your Easy Control setup.