Hi

Fitting a hidden 12v socket for a dashcam to my Fabia II Combi at the weekend. It's been a long time since I last did one of these on a Fabia II, and I can't for the life of me remember which way round is the correct orientation for the Piggy Back fuse to connect to the "hot" side of the fuse socket I'm piggybacking. I'm using Fuse 26 (rear wiper).

UK layout fuse box (so small fuses on the right, big fuses on the left). Should I go with piggy back fuse cable pointing up (fuses out to the right) or pointing down (fuses out to the left)?

If anyone knows, please let me know.

Thanks

Chris

Measure voltage at each end of the (empty) fuse socket with ignition switched on.

1 hour ago, Breezy_Pete said:

Measure voltage at each end of the (empty) fuse socket with ignition switched on.

No multimeter to hand alas. If I did, wouldn’t need to be asking.

An adequate one is extremely cheap and widely available.

Not worth buying another one just for this.

If anyone else has done a dash cam install and can confirm the correct orientation of the piggy back fuse, that would be really helpful.

12 hours ago, chrisgreen said:

Not worth buying another one just for this.

If anyone else has done a dash cam install and can confirm the correct orientation of the piggy back fuse, that would be really helpful.

One end towards the battery and the other towards the camera. It's a fuze, not a diode!

That’s not how a piggy back fuse works!

It needs to be plugged in the right way up so the hot voltage is on the right pin to allow the circuit to work (with the tapped feed being on its own smaller fuse so it blows before taking out the original fuse in the socket). Inset it the wrong way round and everything runs off the original fuse - no isolation and if the fuse goes, you lose both power feeds at once. Inset this case, would be the dash cam and the rear wiper.