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#Post#: 36874--------------------------------------------------
A plea to any electrical wizards out there!
DIR By: TrevB
Date: September 12, 2012, 4:02 am
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Hi guys,
I put my '84 Series 3 in for MOT the other day and it failed on
a couple of minor points, one being the nearside headlamp not
working on dipped beam. What was happening was that the
headlamps came on when the lights were put on, but when they
were switched to main beam both headlamps went out! I took out
the nearside headlamp and there was something rattling inside so
it was clearly broken. I ordered up a new one from lrseries (who
I take my hat off to for their prompt dispatch - it arrived the
following morning! :smile1 ) and went to fit it this morning. I
still have the same problem...the headlamps come on when I turn
the lights on but both go out when I flick the stalk ???
There's obviously more to this than meets the eye, but I'm crap
at vehicle electrics. Any ideas anyone?
Many thanks
Trev
#Post#: 36877--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: FenTiger
Date: September 12, 2012, 4:42 am
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Stalk is fucked, common fault on S3's. About £20 to replace. The
copper contacts soften / anneal over time and don't contact.
When fitting a new one, it is worth wiring the lights in with
relays to stop the high current going through the switch and
making it happen again.
#Post#: 36882--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: Jon
Date: September 12, 2012, 5:33 am
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I had the same issue on the S2, turned out one of the pins on
the the three pin plug was corroded. I cut the plug off, crimped
them up individually and all was good.
#Post#: 36883--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: TrevB
Date: September 12, 2012, 5:39 am
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Thanks for the replies guys. I'll check the plug first before
trying to track down a new stalk. I need to get this sorted and
back in to the testing station before the end of the week
otherwise it,s a full re-test!
I'll let you know what the problem was if I manage to fix it :)
#Post#: 36886--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: Jon
Date: September 12, 2012, 5:47 am
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I got myself a cheapo 9v battery multimeter from B&Q £9 i think,
and it has helped no end tracking down the gremlins.
Either that or a 12v test bulb, just make sure it works before
you start testing ;-)
#Post#: 36889--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: FenTiger
Date: September 12, 2012, 6:30 am
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Does the flash still work, but not the main beam. If so, it is
the stalk from memory. You can bodge the stalk short term to
make it work by packing being the conact woth some insulting
tape.
#Post#: 36893--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: RMS
Date: September 12, 2012, 7:02 am
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Mine used to do that on my S3.
The stalk assemblies are made of cheese - even the new one
didn't feel positive, though at least it did work!
What's worse is when it fails on the dipped beam contact -
nothing worse than driving along at night on full beam, then
flicking on to dipped beam when a car comes towards you only to
be plunged into darkness :eek:
At least if full beam fails you can still drive on dipped.
Easy to change and relatively cheap :thumbs:
#Post#: 36899--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: TrevB
Date: September 12, 2012, 7:48 am
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It's looking like the stalk assembly that's at fault. I got it
to work by wiggling it about! The lights go out again though
when I use the indicators. Just having a poke about now to see
how easy it is to get off and replace.
Another issue I'm having is with the offside stop/tail. When I
brake, the brake light comes on ok. When I put the lights on,
the tail light works. But when I brake with the lights on the
brake light doesn't come on ??? I replaced the stop/tail light
assembly this morning thinking that would fix it but it didn't
:(
Vehicle electrics are a black art...I'm going to rip the wiring
loom out and hang myself with it! :banghead
#Post#: 36900--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: FenTiger
Date: September 12, 2012, 7:53 am
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Bad earth on tail lights causing this fault. Remake the earth
connection to the bodywork.
#Post#: 36903--------------------------------------------------
Re: A plea to any electrical wizards out there!
DIR By: TrevB
Date: September 12, 2012, 8:05 am
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Cheers Fen, I'll take a look :smile1
Would this be the screw inside the assembly that goes through
the copper strip to make an earth or is there another one
somewhere?
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