Custom Battery Cables for General Motors (GM) Diesel Engines
Amazon.com: Red Hound Auto Passenger Side Battery Tray Compatible with Chevrolet GMC Silverado Sierra 1999-2006 1500, 2001-2006 1500 2500 HD, 2007 Classic Models and More Auxiliary Black : Automotive
Battery Cable - Compatible with 2001 - 2007 Chevy Silverado 2500 HD 2002 2003 2004 2005 2006 - Walmart.com
For 2001-2006 GMC Sierra 2500 HD Battery Cable SMP 51131BJ 2002 2003 2004 2005 | eBay
99-06 Silverado 1500 How to: Dual battery setup - YouTube
Battery Replacement: 2005 Chevrolet Silverado 2500 HD 6.6L V8 Turbo Diesel Extended Cab Pickup (4 Door)
Right Battery Tray - Compatible with 1999 - 2004 Chevy Silverado 2500 2000 2001 2002 2003 - Walmart.com
Negative Battery Cable - Compatible with 2001 - 2006 Chevy Silverado 2500 HD 2002 2003 2004 2005 - Walmart.com