Almost certainly poor earth, a very common problem. The light is finding an
earth through some other circuit (very non-techie speak). The only cure is
to clean up the earth point, on one of the boot lock bolts at the back, or
the shell of the indicator at the front.
Nick ('73 B got the electrics going now)
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From: mgs-owner
To: MGS
Subject: Something other than turkey to chew on!
Date: 27 November 1996 23:15
Hi List,
You've not really heard from me yet. I've been lurking in the shadows
reading
all the correspondence and avoiding controversey. Tonight, though,
emboldened
by numerous Coors Lights and bored almost silly, I've decided to come out of
the closet and post a question that's really been bugging me:
On my 77 MGB, which is a daily (when she runs!) driver, my left turn signal
flashes extremely slowly. During daylight hours without the heater running,
it flashes alright, but with headlights on, when I apply the brake or turn
on
the heater fan, the left signal flashes so slowly that it's almost useless.
The right does fairly well all the time.
I know that there's insufficient current flow in the left turn signal
circuit, but is it coming from:
a.) poor ground connection
b.) poor "hot" connection
c.) incorrect wattage lamp installed
d.) bad contacts in turn signal switch (I've bought a new one due to
problems with holding high beams on headlights, but haven't
installed it yet)
e - z) other cause I haven't thought of
I think it started about a year ago, but seems to have gotten progressively
worse. I've plotted my course to and from work to minimize left turns! I've
always subscribed to the theory that a problem ceases to be a problem and
turns into a mere inconvenience once you know the cause, but this thing
borders on being dangerous.
Can anyone save me some time out in the cold with a volt meter and tell me
whether you have had a similar experience? Is it the front or the rear,
etc.?
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