1. Disconnect a negative wire from the battery.

If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the audio system in action!

2. Remove a combination of devices (see the Section Removal and installation of a combination of devices).
3. Turn out fixing screws and uncover with assemblies a combination with protective glasses.

4. Turn out fixing screws and remove the measuring instrument needing replacement / a control lamp.

1. Install the replaceable measuring instrument / a control lamp on the printed circuit board of a combination of devices. Screw and tighten fixing screws.
2. Establish into place a cover with protective glasses.
3. Establish a combination (see the Section Removal and installation of a combination of devices).
4. In conclusion connect a negative wire to the battery and check serviceability of functioning of all measuring instruments of an instrument guard.