yeah the oz switches say on oz's site they are for tC/xB only.
dont the OEM heaters have an OEM switch made for the blank?
pull the e-brake up and that panel does just yank out.
the blanks do just "pop" out once you have the panel out.
just poke a hole in the GIANT rubber grommit used to run all the stock wires through the firewall, above and to the drivers side of the brake pedal, if i recall.
dont drill another whole unless your gonna be running more or larger wires, i drilled 2 holes in my firewall for all my wiring.