help.....confused

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w4hsa
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Joined: 01.03.2005
Location: Rutland

Fog light is not working.....
but there is 12v at foglight, no open circuit, bulb good, bulb holder good yet still won't light.....help

twodogs
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Joined: 10.04.2004
Location: Dudley, West Midlands
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Re: help.....confused

Its got to be an earth problem ,
wire in a new one
Twodogs

w4hsa
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Joined: 01.03.2005
Location: Rutland
Re: help.....confused

a previous owner already has!

I get a resistance of 1 (open) on original wire but new one seems fine 0.3ohms.

Guess I need to run a lead straight back to battery to eleviate earth lead.

as power takes easiest route does this mean I have a short in circuit?
andy

w4hsa
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Joined: 01.03.2005
Location: Rutland
Re: help.....confused

ok update....

Ran a new earth cable straight to battery.....nothing.

Left new earth on and put + straight to + batt terminal...light (so earth lead good)

Checked volts at fog light when swithced on 8.8volts? (should have checked across battery but didn't)......would this voltage loss account for bulb not lighting

...this is all thats left between me and an mot arrggghhhh!