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The mkiv Supra Owners Club

Yet another dash lights problem...with a twist


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Ok here are the facts that I know of:

 

Heater/fans work fine.

All daytime lights works fine (heater/fan).

All instruments work fine.

No night light illumination (ie speedo, revs, temp and fuel).

No dimming of daytime lights.

Tried bypassing the dimmer switch but still nothing.

Checked all obvious fuses and nothing (checking again soon)

 

Please someone suggest something!

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Do the lights on the center console work, the ones around the heater controls etc..?

 

If they all work, it eliminates the switch and dimmer.

 

Just seen you wrote, 'no dimming of daytime lights', thats because the dimmer has no effect unless the lights are on.

 

Check the stupid plastic floppy circuit board on the back of the dial cluster, they are prone to bad connections on just about every car that has them fitted. I'm pretty sure the supe has one too, I replaced my dials ages ago and can't be sure if there is one.

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Do the lights on the center console work, the ones around the heater controls etc..?

 

If they all work, it eliminates the switch and dimmer.

 

Just seen you wrote, 'no dimming of daytime lights', thats because the dimmer has no effect unless the lights are on.

 

Check the stupid plastic floppy circuit board on the back of the dial cluster, they are prone to bad connections on just about every car that has them fitted. I'm pretty sure the supe has one too, I replaced my dials ages ago and can't be sure if there is one.

 

Yeah the heater control lights work fine. And they don't dim when the lights are on.

 

Which dials do you mean exactly? I have the speedo out at the moment so it can't be that as no other buttons are lighting up when the lights come on either.

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Right, I'm now well and truly confused.

 

What 'buttons' aren't lighting up?

 

when I say dial cluster, I mean the whole unit that holds the speedo, rev counter, and temp/fuel gauge. If you take it out and unplug it all, I doubt any of the lights will work as there is a huge break in the circuit unless its all plugged in. On the back of the unit, you'll see the floppy circuit board thing that all the dash lights plug into, this is the thing that has bad connections.

 

Once you have it all plugged back in, turn the headlights on, check the buttons that control the direction of airflow from the heaters, this should light up when the lights are turned on, and be adjusted by the dimmer switch. get back to me once this is confimed to work or not.

 

Edit --- Did the lights work prior to you installing el-glo dials ?

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