Wrap Positive Cable w/ Battery Relocation?

I ran both power & ground cables inside the car without any sheath or wrap. They do not go over or near any sharp edges. Installed one of these kill switches in the ground cable:
http://www.summitracing.com/parts/hfm-batk

Note that neither the switch or it's placement meets NHRA's bass-ackwards rules. I don't care, I'll never drag race the car. Switch is for ease of working on the car and a layer of security.

Used a pair of these, one black, one red, to go thru the firewall:
http://www.summitracing.com/parts/aaf-all76142

Just be carefull when putting a cutout switch in the negative to the battery. Don't get caught out running an earth back to the battery, say for a clock or audio system. Anything else that is connected will try and use the same earth path and you could fry something. :violent2: