Dimming light on the heater unit

[FST4RD]

Hey all... is there a way on a BG5 wagon that you can stop the heater unit from dimming when you turn the lights on?

I always drive around with the spot lights on, and during the day if you want to use the heater or air con you can't see whats on the screen. You have to turn the spot lights off to see what your doing.

[Divine]

I was told on here that you can on the b4 model upwards, otherwise unplug a cable so it thinks the headlights aren't turned on?

[FST4RD]

Yeah I was assuming it was just cutting a wire or unplugging something... but I don't want to cut the wrong thing

[DRFVDR]

u realise that it is "illegal" to drive with your foglights on other than in fog/mist/rain/snow ( I know it is a stupid law but thats how it is )

[Joker]

except they are driving lights not fogs technically as well

the interior set of lights on MY BG Ltd are specifically labelled FOG light

[FST4RD]

I drive with them on all the time, not to be cool, but hopefully all the shit useless other drivers on the road will see me.

Plus aren't fog lights generally yellow rather then white? I regard them more as driving lights anyways ;D

So anyone know how to stop the heater unit dimming?

[Kiwiflyboy]

Oh the bh you hold down the off button and it goes bright try that??

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[FST4RD]

 Kiwiflyboy said:

Oh the bh you hold down the off button and it goes bright try that??

Sent from my iPhone using Tapatalk

Sweet I'll try that tomorrow ;D

Could be my cars christmas present to me!

[FST4RD]

 Kiwiflyboy said:

Oh the bh you hold down the off button and it goes bright try that??

Sent from my iPhone using Tapatalk

Didn't work

[purpleandy]

surely there would be the same 12v 'dim' feed that is connected in the same way as the feed that dims your stereo when you turn the lights on ?? ie lights off is 0v and lights on is 12v ?? reckon ten minutes with a multimeter would solve it ...... or you could just flick your lights off briefly to read it which is what i do - that panel on full brightness at night time would be way too much of a distraction......

[FST4RD]

 purpleandy said:

surely there would be the same 12v 'dim' feed that is connected in the same way as the feed that dims your stereo when you turn the lights on ?? ie lights off is 0v and lights on is 12v ?? reckon ten minutes with a multimeter would solve it ...... or you could just flick your lights off briefly to read it which is what i do - that panel on full brightness at night time would be way too much of a distraction......

Yeah your right, probably would be to bright at night. Was thinking of finding the right wire then running it through a switch. It's almost impossible to read during a slightly glarey day.

Might have to bust out the multimeter!

[Durty-Sanchez]

The fog lights can power the illumination signal line independently of the main lights, hence the problem you've got. If you can find where the fog light circuit does this then you can disconnect it so only the headlights power the signal line.

Places to look:

1. The fog light push-button switch itself - they may have made it easy for you!

2. The relay that powers them - pretty sure it's under the dash.

3. Some god-awful place under the dash - lets hope it's not this.

Given that the illumination wire is a cabin-only feature you can expect 1 or 3 I'd say. If you find it let us know, I've been meaning to do this also for ages now

[DRFVDR]

It's actually via the park light circuit as when you switch the FOG lights on these are powered up as well, the only way around it will be to put a switch in the circuit from the wiring behind the stereo,maybe look up one of the many online wiring digagrams OR google subaru legacy stereo wiring,

when checking for this wire it may look like an earth so when u find it make sure it changes polarity from lights of to lights on