The front camera wire is tucked under the edge of the plastic mirror fitting, then along the screen top & down the A post, into the fuse box from underneath at the back (can't be seen when door is open), then a piggy back fuse connector for power & drilled a hole in the bare metal which can be seen at the side of the fuses and earthed with a self tapping screw. Used a hard wire kit for this one.
The rear power cable is connected the same way, wire runs up A post along edge of roof lining, down rear plastic cover next to parcel shelf & through holes behind rear headrest. Then fastened to underside of metal parcel shelf in boot using self adhesive cable clips (supplied with camera), into boot lining & round to near side inspection hole where it terminates connected to a 12v accessory socket.
Camera wire runs along roof lining, then follows power cable down plastic etc. Plugs into 12v socket behind inspection cover at near side of boot lining. No hard wire kit needed using this method.
Rear camera is an A118c which is the capacitor version, supposedly longer lasting than the battery version but slightly more expensive.
Front camera looks identical, but is the A118, battery version.
Both cameras have worked flawlessly since fitting.