two bolts into the front calipers... snakes back up to and RCA connector.. I believe there are one or two plastic ties that keep them wrapped with the "brake pad worn" sensor and something else.

I have two spares and am going to replace the right side one tonight and see if that solves the problem... if not I will replace the left... if not...I guess I will have to buy a rear one....

Had two good speed sensors..so I know at least what direction to go on..

Lee