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Car Forum / MINI / January 2006

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intermittant electrics problem...

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GG - 19 Dec 2005 15:58 GMT
Hi all,
just wondered if anyone might have any suggestion regarding a headlight
problem I have had.
Its proving difficult to trace as I cant reproduce it but it has happened
twice now.

I have a 1991 cooper carb model (not RSP),

when I got the car one of the spots was broken so I replaced both (still
using the existing wiring) on connection all the lights failed. I tried to
trace along the loom and pushed on a few connecters and then everything
worked fine.

4 months later having driven with the spots on and high beam I park up. When
I return the headlights are not working, again tried the connectors no
obvious problem, but then notice the radio has lost its memory too - I
understand the radio memory and high beam flash are both on the same fuse so
checked that but its fine, I reprogrammed the radio and (maybe by
coincidence), the lights came back on... as soon as I pressed high beam
flash the radio tripped and the lights went out and nothing would get them
on again. No other lights were affected, just the headlights (dip and high
and spots).

Three days later I return to sort the problem but the lights are working
fine and I cant reproduce the fault? Any suggestion... please.

Regards, Gwilym.
Fitzy - 19 Dec 2005 17:13 GMT
> Hi all,
> just wondered if anyone might have any suggestion regarding a headlight
[quoted text clipped - 25 lines]
>
> Regards, Gwilym.

Sounds like the dreaded dirty contacts between the bullitt connectors and
possibly the fuses,
pull them all apart, clean and lubricate, then pull the fuses, and do the
same, remember to clean the fuse connectors in the fusebox,
finally check the engine to body earth,
HTH
Fitzy
** - 19 Dec 2005 20:07 GMT
> Hi all,
> just wondered if anyone might have any suggestion regarding a headlight
[quoted text clipped - 23 lines]
>
> Regards, Gwilym.

Hi,
I preume you will be checking the connectors and fuses, but also, remove the
fusebox from the bulkhead and check behind it, This area is prone to
corrosion from the foam bulkhead liner that absorbs water.

Keith
Pedro - 19 Dec 2005 23:37 GMT
So if I am starting again, with a re-painted shell - including the
bulkhead, what is the best way to stop this from happening?

Someone once mentioned an enclosed, super duper fuse box? Does anyone
have any details please?

Is the bulkhead liner just for soundproofing? and is there another way
of doing this without creating a big sponge?

Thanks

Peter
erik fishead - 19 Dec 2005 23:48 GMT
> So if I am starting again, with a re-painted shell - including the
> bulkhead, what is the best way to stop this from happening?

Custom made sealed wiring.

If you don't want to go to that trouble, buy new solder-on (not crimp) male
bullet connectors and use brand new female bullet connector blocks.

Seal with vaseline or copper grease, then wrap the wiring completely with
loom tape - it's a bit like non-sticky insulating tape and there's a knack
to stretching, wrapping and tying off so it stays together.

> Someone once mentioned an enclosed, super duper fuse box? Does anyone
> have any details please?

Suitable fuse boxes, wire and loom tape are available from places like
http://www.vehicle-wiring-products.co.uk and
http://www.merlinmotorsport.com - both places I've had great help from.

> Is the bulkhead liner just for soundproofing?

Yes

> and is there another way
> of doing this without creating a big sponge?

Try acoustic matting - the stick-on stuff. If you want to soundproof the
bulkhead though, make sure you cover up every single hole that air can pass
through - or sound will pass through too. If your windscreen seal doesn't
leak, try doubling the amount of soundproofing in the dash area, and fit a
full-width dashboard if you don't have one already.

erik.
Pedro - 20 Dec 2005 18:32 GMT
Star Man.

Thanks

Peter
GG - 21 Dec 2005 11:07 GMT
> > Hi all,
> > just wondered if anyone might have any suggestion regarding a headlight
[quoted text clipped - 32 lines]
>
> Keith

Thanks for all the help everyone.
The problem does reproduce now so seems like a good time to fix it properly
before it fixes itself temporarily again!
Now the headlights work until I switch to high beam or flash high beam at
which point all the lights go out (and the radio memory resets), thankfully
this time if I turn the lights on and off again the low beam works again.
Could this be to do with the spots I fitted? I did use the original wiring.
Regards, Gwilym.
Taffy - 21 Dec 2005 15:28 GMT
> > > Hi all,
> > > just wondered if anyone might have any suggestion regarding a headlight
[quoted text clipped - 47 lines]
> Could this be to do with the spots I fitted? I did use the original wiring.
> Regards, Gwilym.

Is there a relay for the spots?  My 90' Mainstream Cooper got fitted with
aftermarket spots. (although they've been removed now) and there's a little
relay mounted on the off side inner wing in the engine bay.

Taffy
fragged - 02 Jan 2006 22:38 GMT
hiya
a relay is really a must with spots they look complicated but are simple
once you understand them.

fragged

> Hi all,
> just wondered if anyone might have any suggestion regarding a headlight
[quoted text clipped - 23 lines]
>
> Regards, Gwilym.
 
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