Charger Connected to Engine or Chassis Ground

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

1.

Connect the positive (red) charger clamp to the positive battery post.

2.

NOTE: The negative charger clamp must be connected to an unpainted chassis surface or a solid engine component such as a generator mount or engine lifting eye.

Connect the negative (black) charger clamp to an engine or chassis ground.

3.

Charge the battery according to the battery charger owner's literature.