Steve,
Yes, I did notice this on the prints but this does not correspond to the set up on my coach. The 450 wire, which I have identified with the 5 amp fuses and diode, does go to the alternator but I do have a rear service center
Also contrary to the prints I have 233. 450, and 1A running to the alternator. I just have to assume that they changed the set up sometime during the manufacturing process. Interesting thought on Racor prime system. In trying to trace the wires from that system I could only find a packet of perhaps 3-4 wires incased in a fairly heavy plastic sheath. I didn't get in to that. It may now be a moot point which I will explain shortly.
Ed,
I was just about to start the process you outlined in your last post and thought I would call BCS to see if they could add any information. In talking to Ken Carpenter he advised that a great many inquires he gets on alternator problems occur after changing brands from the original Leece-Neville. He also advised that he could not describe the routing of the wires that might be involved but said that most of the time when the owners went back to the original their problems disappeared. The following day I had occasion to be in a town that had couple of automotive electrical shops that service and sell alternators. Thought I would stop in just to check the price on a new Leece-Neville in the event that the next series of tests and the last ones that I was going to try, the ones that you recommended didn't solve the problem I would probably bite the bullet and replace the alternator (ugh!!). In talking to the counter man ( I had never been to this place before) and explaining the numerous problems I was encountering, including trying to hook up a "non sense" alternator to a coach that previously had a "sense" system he advised that if it were himself he would install a diode right before the "I" terminal on the alternator. He felt that that since that output numbers I was getting was good that the diode might very well solve the problem of the engine not shutting down. Then he "GAVE" me the diode and wished me an early Merry Christmas. I went home and wired it in as he suggested. The engine started right up and shut down as it should. I tried it several times and everything was fine. I am REALLY hoping I can finally put this thing to bed!
Ed, I think you were very close to nailing this one down. I remember one of your other posts suggested feed back going back up to the ignition might be causing the problem. Thanks for all the help and to all others who have contributed.
P.S. One other thing for those of you who may be having parking brake problems with the disc system, when I was talking to BCS I ordered a new parking brake pad since one of mine has worn down again almost to the metal, the parts man mentioned that they have a retro kit which consists of 2 springs which will keep the pads separated and should eliminate many of the wear problems. I did not know this was available. Not sure if this is a DIY project or not but Ken is sending installation and adjustment instructions along with the pad.
Tom