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Instrument panel constantly pulses

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Joined
Feb 4, 2021
Messages
40
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8
Location
Madison, WI
Hello folks.
I bought my 1972 Cherokee Challenger this March and have had a fantastic time flying it over 150 hours this year. I have been experiencing this really vexing problem though- the instrument cluster pulses (pretty regular intervals) when the engine is running. Also, at times, I have had to recycle the battery switch because my EDM-700 gives me an over voltage warning. I’m wondering if there’s a quick fix to the problem?
Thanks for any and all advice.
 

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