You can take a DVM and measure the header pins resistance.
Check by tracing the wires back to the header, - and start at one pin, measure using 1X scale on the DVM using that pin to start, and simply measure for "short" (low resistance) to another pin, then once you have the pins used, the process is pretty easy to make permanent.
I believe there is only one "jumper" embedded in the harness Dongle.