How to test a C4 Corvette digital instrument?

Make a note of any that are not on during the lamp test. Cover the photocell port (top left of cluster housing). The cluster should dim noticeably. Set the DIC switch to Volts and make a note of the battery voltage. The testing procedures probably won’t be conclusive if the battery voltage is less than 11.5V.

What makes the dash lights go out on a corvette?

The dash lights flicker or go out altogether for extended periods of time. Hitting the dash (not recommended) sometimes brings the lights back. 3. Dash lights go out and turn indicator lights and high beam indicator light go to full intensity.

How to remove the digital cluster from a corvette?

1. Place the Digital Cluster face down on a soft surface and remove the five 7/32″ hex screws holding the metal panel to the rear of the panel. Remove the metal cover. See Fig 1. Figure 2 – Back Cover Removed 2. Remove the seven 7/32″ screws holding the top circuit board to the Digital Cluster case.

What should battery voltage be on C4 Corvette?

Cover the photocell port (top left of cluster housing). The cluster should dim noticeably. Set the DIC switch to Volts and make a note of the battery voltage. The testing procedures probably won’t be conclusive if the battery voltage is less than 11.5V. Check the factory wiring at the cluster harness.