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Connect measuring instrument

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To retain the radio code or PCM code, the following procedure is recommended:

  1. Set the measuring instrument to the highest possible current-measuring range.
  2. With two alligator clips, connect the measuring instrument to the battery ground and to the unoccupied second body ground which is always available for RHD or LHD.
  3. Remove ground strap from the body and secure against contact with the body. The entire vehicle current now flows through the ammeter.
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