If needed, I may have a part number for the switch I bought about 2 years ago. Similar to the one mentioned above: Returns to center when released. Works fine. I'll look for it.
http://www.amazon.com/Double-Heavy-...&redirect=true&ref_=oh_aui_detailpage_o02_s00
Went thru my purchase history and found it.
there's a similar switch listed below the one linked to above that has a 12v rating @ 30 ampsThat switch is designed for AC. It is hard to tell what that switch is rated for or how long it will last in a DC application since the internals will be constructed and designed defferently. Arcing when contact is made will be different, voltage gap will be different, heat dissipation will be different, etc. Best to find one that's designed for DC.