the few times i have done it i did something different than what mkiv.com says. instead of alternating touching them to a ground, i think i held one of them constantly to the ground and then touched the other to it in 1-second intervals. i had someone in the driver's seat and when the light would go out i would quickly remove both the wires. just tinker with it but remember that doing EXACTLY what mkiv.com says didn't EVER work for me (although others says it does.) mix it up a bit. hope this helps!
I didn't anyone to help me so I temporarily borrowed both sets of speaker wires from my home stereo system. They are long enough so that you can sit in the drivers's seat. Also if you are trying ground to AB first, try also ground to TC first.