No fog lights

[Huw Powell]

Mark R wrote:
> Pretty simple circuit to diagnose with a multimeter.  You know there's no
> power at the lights,

Brief interjection: Not until he tests the bulbs or meters the sockets, 
he doesn't.

> so start at the relay and work your way backwards
> (+12V, ground, switched 12V, etc.).  If you find no obvious issues, it's
> either the relay, or corrosion in a wire causing voltage to appear, but not
> sufficient amperage.  Bypassing the relay with a jumper wire (I use a simple
> switch in line as well) can easily verify one side of the relay circuit's
> ability to carry the current..

It's a good idea to include a fuse, 10A or so, in a jumper like that, too.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/