Instrument cluster lights flashing from bright to dim

2001 CHRYSLER TOWN AND COUNTRY
45,000 MILES
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FLYINGHEAVY
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The instrument cluster, A/C, radio and CD lights (all dash lights) sporatically flash from bright to dim when driving at night in my 2001 Town and Country. I performed a bite check and no error codes came up. Most of the time the light switch is left in the A position. Any suggestions on what might be causing thie problem?

Thanks!
Dec 21, 2011 at 2:09 AM
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MHPAUTOS
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Check that the alternator charge rate is not to high, i will look at the schematics and see if there is a voltage stabiliser for the cluster.
Dec 21, 2011 at 2:15 AM
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FLYINGHEAVY
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Thanks for your help!
Dec 21, 2011 at 3:07 AM
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MHPAUTOS
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let me know about the charge rate ASAP.
Dec 21, 2011 at 4:49 AM
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FLYINGHEAVY
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I am not familar with how to perform that check. Do I place the negative probe on the + terminal of the battery and the positive probe on the B terminal of the alternator?
Dec 21, 2011 at 6:31 AM
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MHPAUTOS
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Basic test B+ alternator neg to earth, run at idle and at 1800RPM approx, do with no load ands with load, ie, heater blower on and high beam on.
Dec 21, 2011 at 11:20 AM