Bosch Kl 1206 Manual Better -

If there’s no power, a simple fuse swap often brings these legends back to life. Keep it Clean:

Connect the clamp to the positive (+) terminal of the battery. Bosch Kl 1206 Manual

If your specific version features LEDs, a red light typically indicates a connection error or a fault, while a green light signifies a full charge or "ready" status. Search for Owner Manuals and Spec Sheets - Bosch If there’s no power, a simple fuse swap