earth problems :(

m35reo

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449

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dolgellau, gwynedd

• Jan 31, 2010

• #1

having big eletrical problems on my 1990 110 seems to be an earth issue? as its effecting various things like the gauges, wipers, indicators, brake lights and washers. the main battery to gearbox earth is fine as is the engine to chassis, is there an earth behind the dash anywhere?

 

fanatic

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• Jan 31, 2010

• #2

someone will pipe up but the ones I've played with are on bulkhead-above clutch master cylinder

 

bustersbus

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Near Dumfries, Scotland

• Jan 31, 2010

• #3

Might be an idea to check the wirin' at the back end as well, it might've rubbed through on where it comes out off (and into) the chassis or even inside the it!

 

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• Jan 31, 2010

• #4

as is it enters chassis at the front, where it exits at the back and the body seam behind rear lights-prime places for rear loom

 

J

JonM

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19

• Jan 31, 2010

• #5

I checked the voltage drop with respect to the battery negative terminal. As I turned on the heater fan, lights etc. I saw increasing voltage drop.
Follwong a forum tip, I ran 2 new earth wires directly to the battery terminal, one from the fusebox mounting screw and another from the bulkhead earthpoint inside the engine bay.
Much better now, the dash "voltmeter" doesn't shift now as I turn on stuff.

 

R

robrennie

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183

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Weston Super Mare

• Jan 31, 2010

• #6

Jon, you star! I assumed my battery was dying or the alternator was failing - I have the Voltmeter problem you described.

Brilliant.

 

m35reo

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dolgellau, gwynedd

• Jan 31, 2010

• #7

cheers for the ideas guys, im going out in the snow to check all of that out. will report back later

 

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• Jan 31, 2010

• #8

easy way to check would be to use a jump lead from negative of battery and earth the bulk head with it

 

m35reo

New Member

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449

Location

dolgellau, gwynedd

• Feb 1, 2010

• #9

had a look at her earlier but got sick of lying in the snow, so havnt fixed anything yet! but there is some chaffing on the rear wiring as it exits the chassis. seems the grommet has perished and allowed the loom to rub. also the earth on the bulkhead needs a good clean up as its a bit corroded so as soon as possible il sort those out and see if it does the job.

cheers.j