Instrument cluster lights flashing from bright to dim

Tiny
FLYINGHEAVY
  • MEMBER
  • 2001 CHRYSLER TOWN AND COUNTRY
  • 45,000 MILES
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!
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Wednesday, December 21st, 2011 AT 2:09 AM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
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.
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Wednesday, December 21st, 2011 AT 2:15 AM
Tiny
FLYINGHEAVY
  • MEMBER
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Thanks for your help!
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Wednesday, December 21st, 2011 AT 3:07 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Let me know about the charge rate ASAP.
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Wednesday, December 21st, 2011 AT 4:49 AM
Tiny
FLYINGHEAVY
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  • 3 POSTS
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?
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Wednesday, December 21st, 2011 AT 6:31 AM
Tiny
MHPAUTOS
  • MECHANIC
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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.
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Wednesday, December 21st, 2011 AT 11:20 AM

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