Need some cheap wire

I've heard alot about people using welding wire with their installs. What exactly is welding wire, where can I get it, and how does it compare to Stinger and other brands?

Thanks

you get it at a hardware store ... it's what you use on an arc welder.

I buy the cheap stuff from parts express called amp king. Make sure you get the ring terminal connectors too. Plan out what you need and ored it all at one time.