Twist the negative (ground) wires of both speakers together and solder them to the (ground) pad. (Note: If your speaker wires are integrated into a standard 3.5mm auxiliary jack, you can also solder the wires directly to the left, right, and ground points of a female 3.5mm jack to create a modular auxiliary out). Step 3: Power On and Pair
Connect a power source (3.7V-24V). A blue LED on the board will flash rapidly to indicate it is in pairing mode.
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