I don't want to slice the fuel pump's wire from under the seat because it'll be noticeable and I'll have more wire to hide - which can't really be hidden that well without a lot of work.

I was thinking of slicing a wire from around the fusebox or the ecu - would that work as well, or are there some disadvantaged? Also, which wire would I slice and where is it located?

 

It goes to the front along the drivers side door sill. I also thought about doing this too so it would be harder for a thief to bypass. Not sure exactly where it goes beyond the door sill though. I don't think the wire changes color or anything so just look for a green\yellow wire or whatever it is.