有一家專修 GM, Ford, Chrysle 的，可以了解一下。這裏是鏈接。

http://www.instrumentclusters.com/

Specialize In:

• GM, Ford, Chrysler, and Import Electronic Instrument Cluster Repair
  Including Speedometer Not Working Problems


• GM, Ford, Chysler, Import Analog Speedometers, Dashboards, and
  Instrument Panel and IP Repair


• Mechanical Cable Drive Speedometers
  Classic Speedometer Repair, Antique Speedometer Repair


• Vehicle Speedometer Testing and Calibration


• Ford and GM Mechanical Cable Drive Speedometers