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Help! Electrical Questions (Behind Instrument Cluster)

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Old Jun 2, 2007 | 10:40 PM
  #1  
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Default Help! Electrical Questions (Behind Instrument Cluster)

Okay, I decided to go back behind the dash and instrument cluster (again) to try and fix a couple of problems with electrical, here's the problems:

1 - Only some of the light bulbs in the instrument cluster work - all the wiring "looks" okay, the bulbs are new and work (I checked them), and the fuses in the fuse panel are good.

2 - There's a switch/connector with three wires (Yellow/Blue/Green) that's not connected to anything. From what I can tell from the wiring schematics in the assembly manual, it's says "to heater resistor". Problem is that I don't know where the heater resistor is?

3 - The old radio switch/connector is not connected because of no radio...this has 3 wires Black (ground), Grey (lights), and Yellow (fuse panel). Okay, stupid question, but could this be part of the problem for the some of the lights not working in the instrument cluster, or is specifically for the radio?

4 - Finally, the "Door Ajar" light on the instrument panel comes on when you turn on the running lights or headlights. Again, this appears to be wired correctly, but obviously something is crossed.

Thanks!!!!

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Old Jun 2, 2007 | 10:43 PM
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The radio ground also grounds the cluster so if you have it unpluged then you need to run a ground to the cluster. This may be at least part of the problems you discribe.
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Old Jun 3, 2007 | 08:47 AM
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1. and 3. That part of wiring is messed up in my car as well as a result of bubba style after market radio install. WIll be keeping an eye on replies to this post in order to get my problems solved as well.


2. that plugs into the underside of the heater control module, I think.


4. Door ajar indicator is just above the headlight indicator (at least in my '69). Apparently your headlight indicator light is in the wrong place. Move the headlight indicator light down from the "door ajar" indicacator light's slot.

Cheers,

pete

Last edited by VettePekka; Jun 3, 2007 at 08:51 AM.
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Old Jun 3, 2007 | 09:20 AM
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Originally Posted by VettePekka
1. and 3. That part of wiring is messed up in my car as well as a result of bubba style after market radio install. WIll be keeping an eye on replies to this post in order to get my problems solved as well.


2. that plugs into the underside of the heater control module, I think.


4. Door ajar indicator is just above the headlight indicator (at least in my '69). Apparently your headlight indicator light is in the wrong place. Move the headlight indicator light down from the "door ajar" indicacator light's slot.

Cheers,

pete

Thanks Pete...now that you mentioned the solution to #4, it seems just too obvious (DOH!). My Vette has a Bubba aftermarket radio install too, which I've tried un-doing. But, I must be missing something.

Thanks.
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Old Aug 9, 2010 | 07:14 PM
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Default 1981 Gauge Cluster Connector

Does anyone know where I can purchase one of those 12 wire gauge cluster connectors. After searching the leading Corvette Parts distributers magazines and the internet, I'm stumped. Maybe someone knows an after market harness maker? Thank's for any help. DBT
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