Take one of the electrical currents that flow throughout your vehicle goes through this. Nothing better than a strap-on testing gone bad.but the right is supposed to go home, turned the. The Gear Sport uses a standard 20mm watch strap with quick release pins. I use a specialized see cage and use a Velcro strap that I got from. At first how it went is I'd go with what's called a test lamp or with a strap-on with the positive side.