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1978 280Z manual, 2 seat. I have had a continued problem with "systems on" AKA fuel pump runs, volt charge lite on, EFI relay goes on, when Key off. I first tested all EFI (under hood right side box) relays, all OK. Check alternator which was new-OK, seat belt warning lite ON, unplugged harness, checked key switch-OK. Removed key switch harness, still got same systems showing "ON". Would run down battery in few hours as fuel pump remained running. Note even with full charge volt meter reads low (4-6) but will creep up to 12 plus over time. Charge light remains on. Finally printed blown up FMS electrical skew's, ONLY common to all this stuff, more so with ign switch unplugged from harness is the "Ignition relay" must be the issue, as only common to all according to FMS diagrams. The PN on Part, 25230-89958 below that M$ 3S-561. Saw when others went after this part Nissan dealer said rolls to B5230-W0500. I cannot find one any place, even on net. Have called local Nissan and they kind of said ho-hum not in stock etc. Does anyone know where to get one of these things and if so, what is the correct PN update? I suspect others have had same issues from what I have read, really hard to track down. is there ANY test for the part, as not yet opened it up to see if points burned etc. Suspect it is fault as for a while all was well if key shut off/on a few times, then went into 'come on 5 minutes after turning off mode, ran down battery if not checked. then finally failed as now simply runs. HELP please as ole yeller needs some road time.