OK so this may help someone who wants to do this. I wanted a switched live as above and in the end I went through the firewall and followed the wiring to the fuses in the engine bay on the drivers side.
I had already run the wire to the cam so have any pics of that part but it's very easy to do.
Firstly removed the screws on the panel under the steering wheel.
Once removed it'll be able to drop down but will still held by the parking brake release so take care not to put to much force on it. You could remove the parking brake release but for what I needed to do I just suffered than take one more screw out

. Also there was a large foam block under there make a mental note of which way round it went in.
What you aiming for next is a small bit of foam at the back on the right.....
If you remove it it will give you a straight shot to the fuses in the engine bay. You can see my curly red wire running along there I did secure that after and tidy it up.
Next I removed fuse number 47 (cigarette lighter) put it into the piggy back connection from the hardwire kit and found a good ground on the chassis for the black wire on the hardwire kit.
Once the black wire was attached securely I plugged in the piggy back connection, attached the cam and turned the key without starting the engine and the cam sprung into life! YAY.
Then I cleaned the wiring up secured with small cable ties and put everything back. Good tip if using cable ties is to put a bit of electrical tape over them as a sharp bit can be left behind when trimming the excess off it's just something I like to do. Better still buy the proper stuff the secure wiring but I didn't have any so .....
That's about it really the camera now only works when the key is turned (switched live) which is what I wanted. Some do like a permanent live if for example you're planning on leaving the camera in the car for motion detection but I didn't want to risk a battery drain.
If you do want a permanent live you have the fuses by the drivers door.