I had 3 door, and didn't need to remove bumper, just removed black strip which showed recessed holes where factory fitted should have gone, drilled out strip in correct position , feed wires through holes and feed in behind bumper and tie up with cable ties , these will then pass up through rubber grommet on rear wheel arch on drivers side (R/H drive) into cabin, feed to control box , took power feed/ signal from connecting into the reversing light wiring with a blue scotch-lock and job done