I'll risk potential embarrassment here and assume that your car has a
generator and external voltage regulator. If so, this sounds to me
exactly like a situation I ran into years ago with a friend's Mk.3
Spitfire. Turned out the light stayed on because the voltage reg. contact
had "welded" itself solid, providing a constant current flow. This kept
the IGN light on and, not surprisingly, drained the battery over a
not-so-lengthy period of time.
Of course, I have seen a similar sort of stubbornly independent IGN light
on alternator-equipped Spits as well, so....
Andy Mace
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