Wiring difficulties.

Hi everyone I am have a few problems with my lights wiring but at the minute I'm struggling with fog lights. It's a 200tdi wiring bulkhead loom 19j chassis loom.
The is 10v going across the switch but at the other end of the bulkhead there is only 0.5v.
I check the bulb and unit it's working. And fuse is good.
Any help greatly appreciated.

I'll start...Earth problem?

doriz said:

I'll start...Earth problem?

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Yep! - nearly always is.

OP - electricity needs a way in and a way out - without both it no worky

The headlights need to be on before the fog lights will come on

Al2O3 said:

The headlights need to be on before the fog lights will come on

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Good advice

Cheers for the advice it seemed to be the third fuse was burnt out and then it work. Might not be connected but it's working now

Nothing more satisfying than diagnosing an electrical fault.

doriz said:

Nothing more satisfying than diagnosing an electrical fault.

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Second that.