the inductive pickup is the m20/30 version of a cam sensor, it comes on the new wire set (it's what makes the set cost so much, look at a 87 325e and a 87 325i, same wires but i has pickup)it goes under the manifold. elring is good and i really like goetz (spelling?) (except the bastard i got for the 90 535 head rebuild that i could of finished up today IF it had BOTH upper timing cover gaskets)