Rear parking sensors fitment question

[Jose Rodrigues]

Good day all...

So bought myself some rear parking sensors from ebay... Quick question where would I be able to get power that only gets power when in reverse?
Got a 2013 3door a3, had a focus before and it had a rear fuse box which made life so much easier but I don't see anything on the audi.

Have checked the workshop manual and still clueless.

Should I run it from the reverse light?

Thanks for the advice in advance

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[Darren92]

Are they oem or aftermarket?

 

[Jose Rodrigues]

Are they oem or aftermarket?

Aftermarket

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[Matt Titanium]

Run from the reversing lights - but the car's electronics may detect too much power being dragged from the circuit and flag up a lighting fault. To avoid this use a canbus bypass relay (like this https://www.ebay.co.uk/itm/12V-CANB...073343?hash=item4d0cca683f:g:K0MAAOSwEeFU5wmd or better still for a couple of quid more, a TEB7AS powered from the fusebox.

 

[Jose Rodrigues]

So getting an error on the cluster, so I need to get the canbus bypass...

Thanks for the feedback