I installed DPDT switch that has one pole normally closed on one side and momentary on the other, and a tap off the inside fuse block on a 2nd generation 2011. I had to order the electrical manual to find the right circuit. The job is actually pretty easy if you know which circuit to power. What I did was provide 12 volts to the back up lights which also tell the camera to turn on. I used a switch that fits one of the empty spots on the left side of the dash. The circuit switches the power from the stock power supply to the fuse block tap and does not need anything else like diodes, so it is very simple.
The connections are all under the left side of the dash.
Here is the part information off of ebay.
Rocker Switch, Contact Form DPDT, Number of Connections 6, Switch Function On/Momentary On, Terminals 0.250 in Quick Connect Tab, Mounting Hole 0.830 in x 1.450 in, AC Contact Rating 15A @ 250V, 20A @ 125V, HP 2 hp, Body Color Black, Switch Color Ivory, Operating Temp. Range 32 Degrees to 104 Degrees F, Standards CE, CUL, TUV, UL
MPN:
2LNJ5
You really only need a SPDT with one side normally on and the other side momentary on switch. I only used 3 of the 6 pins on the back. I ordered both a SPDT and a DPDT switch and used the DPDT switch because the rocker color is white and easier to see in the dark. Here is the info on the other unused switch off of Amazon.
I did this a while ago and had to study up on the nomenclature for the switches and am a little hazy on it now. The switch needs to be normally on for one direction and only turn the camera on when you push the rocker switch to the other side. That's what the ON(ON) function description means.
Details & Specs
Light Color: Cold White, Terminal Material: Silver Plated Copper Bass, Number of Prongs: 1.00
Throw Type: Double, Terminal Type: .250" Quick Disconnect, Switch Function: ON-(ON)
Actuator Type: Rocker, Illuminated?: Yes, Mounting Type: Flush-Mount
Housing Material: Nylon, Is it Waterproof?: No.
Package Dimension: Length (In): 1.00, Width (In): 2.00, Height (In): 2.00
MPN: EPS010S-GN-XX
What's Included?
(1) Switch Button
(1) Switch Base