The passenger 12v point is quite easy to access from memory.
The panel above the passengers feet is held on by 3 x 10mm bolts, and then it's a case of pulling it down to I clip it.
The wires to the socket should be clearly visible, and it should be easy to route the cables for a cam to the side of the dashboard, and then around the base of the windscreen from the bottom of the A pillar to wherever your cam will be.