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I have a 1992 500 SEL and all the gauges quit working. I have checked all the fuses and they are good. They were working efore I removed and reinstalled the radio. I installed a new boise amp. When I turned the care on none of the gauges would respond. Does anybody have any idea what might be wrong or what I need to check? Thanks for the help.
 

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92 500SEL to 01 E320T current 2014 lexus LS460
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Did you disturb any of the wires, the plug(s) to the cluster or the grounds. There is a voltage regulator in the cluster that supplies power to all the indicators and guages, that rarely goes bad, and you claim to have checked all the fuses.
Why did you have the radio out, the Bose is in the trunk next to the gas tank.
 

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I took the radio out to check it. Didn't know for sure if it was the radio, tuner, or amp. Find out it was the amp so I replaced it. I will recheck the wiring , plugs, and ground to make sure. Thanks for the reply. Any other ideas please let let know. Thanks again.
 
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