Where to pass battery cable through firewall, 4 speed car.

I ran mine like Blu, up the passenger side. Right where it came thru is where I put my start relay, down on the frame. It's hard to see down there, so I figured harder to hotwire in the dark.But when parking overnight in a strange place, I still disco the battery(in the trunk), and pull the coil wire. Since the coil is mounted to the apron,a thief would also need a 2ft coil wire. Then I leave the doors unlocked, so I don't have to deal with broken glass. After 16 years, the car has never been stolen. They would have to tow it.
One time 600 miles from home, I also took the rotor out,while I slept soundly in the Hotel.