>A couple of weeks ago, the left turn indicator on my '76 Six stopped
>flashing; the front light was on and the back light off without flashing.
>The right indicator worked fine. Today I finally got around to fixing the
>problem. I assumed that it was just a blown bulb in the left rear
>indicator. Silly me! I have a Lucas electrical system (which is part of the
>fun of having this car I keep telling myself). Suffice it to say that I
>changed the bulb to no effect. Perhaps the impedance of the front bulb had
>cahnged causing the flasher to malfunction. So I cahnged that bulb. No
>effect! I ended up with the brute force solution, that is changing all four
>bulbs AND the flasher, all to no avail! This is getting really frustrating.
>Perhaps a grounding problem somewhere.
#1: check the grounding of the bulb-socket; Triumph sockets often
get rusty, and the sockets ground through the clips (at least on TR6's). Often
just pulling them and putting them back will fix it.
#2: Bad connection. Verify that 12+V is getting to the socket. (it
might still be too many ohms; see if you can measure the voltage with the bulb
in). It may well be the front harness/rear harness connector, or just a broken
wire or connector.
#3: the socket may be iffy: TR6 sockets develop a bad connection
between the finger that sticks down and contacts the outside of the bulb and
the fingers that hold it in the assembly - there's no mechanical connection
between them, and they get loose eventually. I wrap a piece of bare, thick
braided wire around a finger and let it drap down into the socket to provide
a better connection to the outside of the bulb.
Note that if the rear bulb isn't pulling current; the flasher won't
flash (wonderful current-sensitive flashers).
--
Randell Jesup, Scala US R&D, Ex-Commodore-Amiga Engineer class of '94
Randell.Jesup@scala.com
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