theres a couple ways to do this. the first way is to find a good spot near the pedals somewhere, and drill a hole to stick the wire through with a rubber grommet. teh other way is to run it up the drivers side of the engine compartment and through a hole in the doorjam.
i'd recommend not going through the door jam or goign near where the hood closes at. i've known people that have done this and then the wire gets cut by the hood or something else and blows the fuse and then you've gotta repair the wire. it's not safe either. especialy with that large of a wire, if i did the conversion to american correctly, 25mm2 is 3 gauge wire, which is pretty good sized to be running like that. drilling through the firewall is the safest and best way IF you use caution. i've drilled holes through the area where the rim of the plastic peice that protects the steering bars go through the firewall. works good for me. just make sure it's an area where you won't hit anything accidently.
well i did mine through the door jam, but i did it a different way. instead of coming up through the top of the hood, i ran the wire from the battery, down by the headlight, and through the inner part of the fender. then it comes out level with the hole in the door jam, through a piece of foam separating the engine compartment from the door. its kind of hard to explain. but it took me about an hour to do this, and i know its done right and wont get pinched by anything
yo, what's going on! i think the best way to run your wire through is the way i did it, no drilling, no door jams, no nothing. check out the metal bar that opens your hood. follow that bar, you will see a rubber piece that can be removed, pull it out and run your wire right through, it's that easy, plain and simple. hope it works for you
are you talking about UNDER where the bar is? if your talking about running the wire down the same place where the rod is that's probably the worst way to do it. but maybe i misunderstood. this is what you want to avoid. http://www.jwardell.com/focus/amp.html no offense to whoever's car that is though.