HARNESS ASSEMBLY 1760052 - Caterpillar

Electronic Modular Control Panel 3 (EMCP 3)
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The Lamp Test button is located on the top right side of the electronic control module. Press and hold the Lamp Test button in order to test all of the LED lights and the display screen. The LED lights and the display screen should remain on until the button is released. If any of the components do not pass this test, replace the faulty components before starting the engine.Electronic Modular Control Panel 4 (EMCP 4)
Perform the following steps in order to test the lamp on the EMCP 4 control panel:
Press the Main Menu button
Scroll to and select Preferences
Press the OK button
Scroll to and select Lamp Test
Press the OK buttonSwitch Panel
The Panel Lights switch should turn on the panel lights. Toggle the switch in order to ensure that the panel lights are working.Annunciator Panel
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Test the LED indicators and the horn when the data link is connected and when the data link is not connected. The Lamp Test button is located near the top of the annunciator panel. Test both the horn and the indicators by pressing and holding the Lamp Test button. Replace any faulty components before starting the engine.