IN CASE OF EMERGENCY

Connecting the Jumper Cables

6steps
~36min
3/5difficulty
Done 0 of 6
  1. Connect the positive (+) end of the jumper cable to the positive (+) terminal of the discharged vehicle.
  2. Connect the other end of the positive (+) jumper cable to the positive (+) terminal of the booster battery.
  3. Connect the negative (-) end of the jumper cable to the negative (-) terminal of the booster battery.
  4. Connect the other end of the negative (-) jumper cable to a good ground on the engine. A "ground" is an unpainted metal surface of the engine, frame, or chassis, such as a bracket or large bolt. The ground must be away from the battery and the fuel injection system.
  5. Start the engine of the vehicle with the booster battery, let the engine run at idle for a few minutes, then start the engine of the vehicle with the discharged battery.
  6. After the engine starts, remove the jumper cables in the reverse order.

Test yourself

A quick Jeep Wrangler quiz: every answer comes with an explanation and a link to the manual page.