The best way i ran it in my car was through passenger firewall behind dash over steering column down through the bottom of doors and under back seat into trunk or if it were me i would buy a kit and (i fabbed my own) move the battery to your trunk give you some room in the engine compartment and than everything is there and all you have to run is the one battery cable either way you got to run it so good luck and yes make sure you get the rubber seals and get some good gauged monster cable its really the best i have found but its not cheap

 

what i did is ran it through the front fender...behind the driver side dash through the center console to the back

 

AHHHHHHHH NOOOOOOOO!

 

well its ok i caught that before any damage was done...to the other wires...they shorted out b/c of water damage the + cable wasnt live yet....i re routed the wires.....but then i crashed the car so i had to remove everything i did......f***in ricers