74 INSTRUMENTS AND CONTROLS 44. Optional Switch – Refer to “Function of Optional Switches”, page 77. 45. Optional Switch – Refer to “Function of Optional Switches”, page 77. 46. Optional Switch – Refer to “Function of Optional Switches”, page 77. 47. Optional Switch – Refer to “Function of Optional Switches”, page 77. 48. Optional Switch – Refer to “Function of Optional Switches”, page 77. 49. Storage Box or Automatic Transmission Selector (If Equipped) – See your Automatic Transmission Operator’s Manual supplied with this vehicle. 50. Air Filter Restriction Indicator (If Equipped) – Indicates that the element needs servicing or replacement. When the red flag locks into position, service as soon as possible to prevent engine damage; then reset the indicator after the filter change. Check the air filter restriction indicator daily. 51. Accessory Power Outlet – See instructions under Accessory Power Outlets listed in the Instrument and Controls Section of this manual. 52. Radio Box – See separate owner’s manual on radio instruction. 53. AUX/USB Port • AUX Port – Use this port to have audio from any unit played over the vehicle audio system. • USB Port – Insert a memory stick, with MP3 music downloaded, and the music will be heard from the vehicle audio system. The music can be controlled with the radio or steering wheel features (if equipped). You can also use this port with the USB style MP3 players. • AUX and USB together – Use both ports together for IPOD control. A special cable is required for this function. Once the IPOD is connected, it will display a MACK logo on the IPOD screen and will let you know that the IPOD can now be controlled by the radio or steering wheel features (if equipped). At this point, the IPOD can be stored out of sight. This port will also charge the IPOD. For more information on the AUX/USB port, please refer to the radio manual that is supplied with your vehicle. 54. Cab Climate Control – See instructions under Cab Climate Control listed in the Instrument and Controls Section of this manual. 55. Optional Switch – Refer to “Function of Optional Switches”, page 77. 56. Optional Switch – Refer to “Function of Optional Switches”, page 77. 57. Optional Switch – Refer to “Function of Optional Switches”, page 77. 58. Optional Switch – Refer to “Function of Optional Switches”, page 77. 59. Parking Brake Valve – Yellow diamond-shaped knob. Pull to apply. Push to release. Applies tractor parking brakes and trailer brakes, if equipped. 60. Optional Switch – Refer to “Function of Optional Switches”, page 77.
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