No instructions but not too difficult to wire. For the female end, remove the red rubber plug, feed both wires through the holes, and then feed the wires through the female housing. Crimp the connectors and slide them back into the housing (so they snap in at the front). Then slide the rubber stopper over the wires into the connector housing. For the plug end, thread the two wires through the black rubber plug, crimp the plugs onto the wires, and then flip them over so the exposed portion of the crimp connector is facing up. Place the gray spacer over the two wires so that the neck is just below the crimp connector. Insert all 3 pins into the connector housing until you hear a click. Finally, insert the black rubber plug into the back of the case. They seem to be very durable and after testing I haven't had any issues with current limits. Very happy with the purchase.
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