Interesting I switched the instrument cluster from Echo 1 with 55k miles ½ tank of gas to Echo 2 with 80k miles with ¾ tank. Turned on power, Echo 2 with Echo 1 cluster read 80k miles with 3/4 tank full its original configuration. Immediately turned power off then switched Echo 1 computer to Echo 2. Again on power up Echo 2 held its original settings 80k miles and ¾ tank. Echo 1 also mirrored its original 55k 1/2 tank with Echo 2 components installed. Switched the instrument clusters and computers back to their original cars. Both cars retained their original information with clusters and computers removed for a hour or more. I didn’t start the engine for fear of overwriting and messing up the components. It appears the settings are stored somewhere else in the car so I would be afraid to run them for any length of time while looking for the electrical problem so am stuck again.
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