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Dash lights - 1974 cutlass supreme

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Old Jan 11, 2021 | 03:16 AM
  #1  
cublex's Avatar
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Dash lights - 1974 cutlass supreme

I don't recall the dash lights coming on when you crank the vehicle up. Any ideas what causing this
Old Jan 11, 2021 | 04:44 AM
  #2  
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Which dash lights are you talking about, actual dash lighting or the warning lights for temp/oil pressure?
Old Jan 11, 2021 | 05:00 AM
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Light

Dssh lights
Old Jan 11, 2021 | 05:01 AM
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Light

Dash lights
Old Jan 11, 2021 | 05:29 AM
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Pull the headlight switch, the dash lights should come on. If not, twist the headlight **** back and forth a few times. The rheostat sometimes gets covered in dust/grime and doesn’t allow a good connection.

Still no lights? Check the dash light fuse. If it’s good, ensure the taillights work. The dashlights are powered by the taillight circuit. No taillights, no dash lights. If the taillights work but you have no dash lights or power at the dash light fuse then most likely the issue is the headlight switch.
Old Jan 11, 2021 | 05:34 AM
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Light

No the dash lights come on when I crank it..I don't recall them doing that..normally came on when you pull the light switch
Old Jan 11, 2021 | 09:11 AM
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The dash lights come on with the headlight **** pushed in, just by turning the ****? The also come on with the headlight **** pulled? Sounds like a defective headlight switch.
Old Jan 11, 2021 | 09:35 AM
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Do the dash lights go back off when the key is in the run position?
Old Jan 11, 2021 | 09:51 AM
  #9  
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Lights

Yes they are one when I crank up..**** not touched at all
Old Jan 11, 2021 | 10:45 AM
  #10  
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From: Southside Vajenya
Sounds like a ground backfeed to me. You need 74 CSM for the wiring diagram.

Here's a wild stab. If car has the map light option above the radio, check to make sure it's not inadvertently left on. It shares a bulb with the floodlight but the way it's wired IIRC it's only supposed to come on with the ignition switch.
Old Jan 11, 2021 | 01:13 PM
  #11  
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Pull the Instrument light fuse, its the short one in the bottom of the fuse block and try cranking again.
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