it is located behind the backside of the hub assembly towards the bottom. you need to have the tire off to be able to get to it somewhat easily. it is held in by a 12mm bolt , you might need to pull the caliper and rotor to be able to push/pry it out of its hole. on mine it was a great pain in the a** to get out as it is held in very tightly by the hub assembly . it is behind the tone ring looking like a slotted bolt (without the threads) poking through the hub. the other end of the wire pokes in behind the wheel well. Hope this helps
