I just did this yesterday with the Joying camera, some notes:
- I pulled the rubber surround, and unscrewed the right hand side bit of plastic that bridges the trunk liner to the bodywork
- There's a small hole that is then visible from above right at back right corner of the trunk liner. It's actually right above the tap point for the reversing light. Annotating @Stevendesq 's photo:
- This is nice because then there are no long wire runs in hot areas near the exhaust.
- I decided to mount the camera at the top middle part of the mesh, vs drilling the bodywork. If I ever get a center exhaust, I'll have to change this
- It'll likely pick up a lot more dirt, but my car is mostly only driven when it's nice weather anyway
- Camera is held to the mesh with 4 small zip-ties and seems pretty secure.
- If you remove the silver clips that hold the top edge of the mesh in place, you can slip the camera connectors through one at a time
- The wires from the camera (2.1mm DC jack, RCA video) will fit through this hole one at a time. I taped the connections up and pushed them through here.
- Front to back run was done via the storage box hole - I went to the left then after removing the engine cover (it just pops off) I could see the wire in the engine bay and fished it out
- Not totally happy with the run from near the fuel filler to the back frame, but will get some self-adhesive cable tie anchors to tidy it soon.
- Interior run was just removing the center console which was relatively painless
Doing this from underneath is pretty easy, but you need to remove the diffuser (don't undo the 10mm nuts, just the 2 screws on each vertical inner edge, the 4 screws on the front edge, and the 5 on the rear edge. You then have plenty of room to get both arms up under the car to tap the reversing light etc.
Big thanks to everyone on this thread and the other camera/joying threads, it's really great to be following a well worn path