Yes that the ticket,now the side of the eha that is (the o-ring) side.also has a brass screw in it,under that screw is an Allen screw,that is what you turn to get the correct electrical settings,after you have done your search and learned how to build the harness to check the electrical values of the eha,one word of advise the Allen screw has no tension on it if you need to change its position, blow the fuel out of the hole and look in side so you can set the wrench into the screw with out turning it, It is very sensitive and only need to be move at 1/8th turns.