This is the positive battery cable for negative ground cars. If your battery is located so the terminals are in the front (close to your battery bar), you should change your battery so the terminals are near the firewall (as shown). 
     - With the terminals away from the firewall, there is a much greater chance of the battery bar adjusting during driving and hitting the terminals, and potentially can cause a fire. 

If you need the negative ground battery cable (for negative ground cars), you can find that by .