Non Canbus power supply for rear parking sensors

[keithcheetham]

I have fitted aftermarket rear parking sensors to my daughters 60 plate 1.2 SE, but the Canbus is obviously not giving the correct voltage for the control unit as I have tapped into the reversing light. Is there an alternate 12V power supply, such as possible standard wiring in place for rear power socket that I can use for the sensors control unit, switching through a relay off the reversing lights.

[iichel]

Yes, there is. If you have a 12V socket, that's easy.
Else I'd suggest the dome light.

A relay controlled by the reverse light should work, thats how my camera works

[keithcheetham]

As there is no power socket fitted in the rear of the car, could someone advise where they are located when fitted so that I can look if the wiring is fitted as standard. I would then be able to tap into it if available.

[rsmagee]

I would use a tap-a-fuse, and run the wire under the sills. Its super easy to slip a wire under.