I've had a trawl through the forums, but have not spotted a suggestion.

 

I'm fitting a dash cam and want to hard wire it into the fuse box, 'piggy backing' off an existing 'switched live' fuse. 

 

I tried F10 (the petrol engine management system) which looked promising as it was 'dead' with the ignition off and 'live' with the ignition on. However, on starting the engine the camera loses power. 

 

It looks like it's not as straightforward as I initially thought, and rather than just guess at what might work, has anyone carried out what I'm trying to do?

 

My fuse box looks like this:

 

http://www.briskoda.net/forums/topic/175843-fuse-panel-layout/

 

Jim

Sorted!

 

The problem was a spurious 'earth' that I chose. The F10 fuse is OK to use as a switched supply.

 

I used a digital ohmmeter to find an earthing point under the dashboard on the driver's side. I couldn't see one that the wiring diagram Haynes refers to, so I checked the bolts holding the relay mounting. They appeared to be earthed - but in fact weren't. I resorted to a self tapping screw in the door pillar, under the plastic cover.

 

All working now.

 

Jim