604089-001 QuickCable OBD II Memory Saver Cable - This is an accessory for jumpstarters and portable power units with 12 volt accessory port. Prevents vehicles memory from being erased while the battery is being disconnected for replacement or service. Use your Rescue Portable Power Pack to prevent ECM memory loss when your vehicles battery is disconnected,In-line fuse,Easily stored in tool box,59 Inches long