Let me explain myself since you seem to feel I owe it to you.

When I led him to the stereo install thread.. he fixed his stereo issue.. whether it's his car..sons car .. same car .. or neighbors car, he has indicated the ability to follow a thread.

Obviously the man is intelligent enough to read and understand so him reading and learning about the RCM problems rather than "check fuse XXX" is most advantageous for him..

Close enough explanation to paciify you I hope.. otherwise I might loose sleep tonight.