Board kit

If you are in full DIY mode - this is the basic set to get you started. You will need to integrate into some form of enclosure - often an old gauge.
Best shot at lcd-to-gauge adapter included but no promise.
Included:
   Board,
    LCD w/bracket and cable
    Encoder with cable
    GPS antenna
 
Optional (stock dependent) temperature sensors WITHOUT connectors - please ask. 
 
Required:
  PWM servo  - rotational RC servos do work with some DIY skills.
  Mechanical linkage.
  Optional DS18b20 temperature sensors, if not included.