crappy earths

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RobC
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crappy earths

Post by RobC » Tue Aug 15, 2006 11:20 am

hello all

i have the common 'rear lights blinking while indicators are on' syndrome. also, the lights on the instrument panel dim in time with the indicators. i've cleaned up the earths behind the rear light clusters, but to no effect.

where else should i check?

ta :D
1991 Citroen BX 16v

tom
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Post by tom » Tue Aug 15, 2006 2:08 pm

Earthing arrangements on these are tortuous. Try the big ribbon cable at the top left of the fusebox. It can come loose.

RobC
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Post by RobC » Tue Aug 15, 2006 2:11 pm

thanks for the tip, will investigate!
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Cornishbx16v
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Post by Cornishbx16v » Tue Aug 15, 2006 3:25 pm

rob, if your wanting to boost the earths on the cra then its a good effort to change over the ones from the negative terminal tpo the chassis, negative terminal to the gearbox and the gearbox to the battery clamp!!
i did mine a couple of weeks ago and was suprised at how cheap a good earth cable is!!
Image
that cable only cost me £7 from my local electric deisel testing type place! ( the thin flat one in the pic cost me £3.50!!) the others for the earth terminal to the chassis and cogbox are only 2-3quid each too! then you'll have a very good earth up front!!!
Timmo.

After all I AM CORNISH!!!!

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RobC
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Post by RobC » Tue Aug 15, 2006 4:00 pm

blimey, i don't even have an earth cable going to my battery clamp... :!: are all BXs meant to have one :?:
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Brian
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Post by Brian » Tue Aug 15, 2006 4:38 pm

Hi Rob,

If all fails, Try this tip, that's what I had to do to cure mine.

http://www.frenchcarforum.co.uk/forum/v ... hp?t=17632

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Post by jeremy » Tue Aug 15, 2006 5:34 pm

The earth to the battery clamp bolt is not a standard fixing. The problem with using that bolt is that the circuit is actually through its thread which is ok while it remains clean and the cable is securely clamped.

Better to drill the bodywork somewhere convenient and make a good connection there by cleaning away all the paint surrounding the hole, and then clamp the cable securely to the bodywork.

Its worth working out the earth circuit first. I can't remember but think it may go to the engine first then to the bodywork. If this is the case there's no point in adding straps if the supply to the engine is poor without improving that first.

Having made a new connection to the body its a good idea to paint it. Ordinary paint (gloss) will do as its only there to keep the moisture away from a metal to metal joint. Conductive paint probably won't protect so well and is outside the circuit.

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Cornishbx16v
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Post by Cornishbx16v » Tue Aug 15, 2006 8:13 pm

youshould be able to attatch the long earth strap to the main earth point behind the battery as its long enough!
i only replaced what was already there! interestingly both my old 8v 309 and this car have had the thin braided type earth cable on the cog box to battery clamp!
brian, have you soldered the cable to the bulb holder area??? couldnt quite see if it was soldered or not!! mine was a little iffy on there for its mot! but a quick scrape cleaned it up a treat and bright lights restored :D
Timmo.

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Post by Brian » Tue Aug 15, 2006 9:51 pm

Hi Timmo,

Yes that was indeed a soldered jount..

I did have my doubts at first if it would solder, after cleaning the solder flowed well..

Other designs of rear light clusters have copper circuits encased in plastic, these would be difficult to solder effectively I think..