so please understand that I am not sure of much at this point. As mentioned I did the "always on" mod and replaced the RCM with a new revised standard unit. fired it up last night and my buddy told me it did engage when I went over 1500 rpm. thats it. no test runs or pulls due to the madness with my mother passing. I am sorry but those are the facts . . just the facts. More at a later time but for now. . its alive !!