Kill switch wiring

[Matt93SE]

P.S. Not required by the regs, but you really should have a big fusible link at the battery going to the kill switch. That way if something crushes the wire between the battery and kills switch and shorts it, you're still protected.

Good point. That's always been a concern of mine with the routing of any relocated battery. My cables run along the right side of the car, strapped to the INSIDE of the cage tubing in the hopes that they don't get crushed in a wreck, but I've always been afraid of that happening. I also just ripped the bigass stereo out of one of my old cars and have a fuseholder capable of holding a 400A fuse.. Any idea what amperage I should use?

[Greg Amy]

Any idea what amperage I should use?

Depends on your wire size...most cars are around 12AWG, I'm guessing? that would be a 20A fusible link. Of course, if the power wire is shorted to ground, a battery can probably put out 500A before exploding...I suggest it would be best to size the fuse for the wire you're using.

http://diyaudioprojects.com/Technica...an-Wire-Gauge/
http://www.bdfuses.com/fusesnwires.php

[Matt93SE]

Depends on your wire size...most cars are around 12AWG, I'm guessing? that would be a 20A fusible link. Of course, if the power wire is shorted to ground, a battery can probably put out 500A before exploding...I suggest it would be best to size the fuse for the wire you're using.

http://diyaudioprojects.com/Technica...an-Wire-Gauge/
http://www.bdfuses.com/fusesnwires.php

There's only about a 10 or 12AWG wire going to the ignition stuff, but from the battery to the kill switch/starter, it's a 4awg wire. big stuff. That's the one that concerns me since it'll easily suck up all of the current the battery can put out until it explodes. (don't ask how I know....)