I got it up and running now, and tested a reverse park at a car park. It works very well and is quite accurate.

I attached the units power wire to the reverse light wire, which is the green and grey-dot wire located in the white connector just behind the drivers side rear speaker. I bought those little plastic tap-in things you can get from bunnings. But I soldered the cable as well for peace of mind.

The units negative wire can go anywhere on the cars frame. I soldered it onto the existing grounding cables next to the drivers side rear lights.

The unit itself was stuck to the inside of the boot frame wall behind the carpet above the rear wheel area. I used extra-strong double sided tape to fasten it on the metal frame, then used two cable ties to ensure it wont come loose.

Its also important to use heat-shrink on the wires where they pass next to the metal frame edges to avoid shorting in the long run. And use cable ties to keep things neat and to avoid rattles.


So yeah, $60 + around $15 of installation materials is not bad. Saved myself ~$400