Does anyone have any idea where I can find a firewall pass thru is on the 2002 ford focus 4 door ls is?

you have 2 or 3! one is on the driver side where most of your cables got through, there is a hole with a rubber stopper next to to that area for any future additions, furhtermore, there is one on the passengers side below the heater hoses, but i caution you this one is very low and if it floods you might get a leak! If its a small hole that you need you can drill where ever you need it and buy the rubber stoppers at the parts store, sometimes its more convinient

Thats what I ended up doing. I drilled a hole from underneath my car, then ran my wires up trough my steering column. worked perfect.