Practice question

When you connect a glad-hand to the trailer, you should:

  1. Use sealant on the threads
  2. Connect them while air pressure is at full system level
  3. Push it in and quarter-turn to lock the lugs together
  4. Connect only the service line first, then drive 30 seconds before connecting emergency

Answer: C — Push it in and quarter-turn to lock the lugs together

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