VW Golf 4: Interior Lighting Dimmer Location & LED Strip Connection for Synchronized Dimming

Question

Hello. Does anyone know where the dimmer of the vehicle interior lighting is located in the Golf 4? Or maybe I will describe what I want to achieve and there will be another solution to my problem. I want to connect the LED strip on the driver's and passenger's legs and the strip is to...

marco2255 · Accepted Answer

The LEDs will not dim, because they work hard with dimmers, in any case you have to connect to the interior lamp and insert an ordinary switch between them. If you have ordinary LED lists, they will glow gently even when the door is closed, then you will turn them off with the switch because the LEDs have a different resistance than the light bulbs.

Anonymous · Accepted Answer

The LEDs will go out earlier than the bulbs. Regards. Because they have a specific ignition voltage

Anonymous · Accepted Answer

Nothing will glow, only the LEDs will go out a little earlier than the bulbs during dimming. Best regards . Try to connect. Alternatively, you will. Added after 26 [minutes]: The LEDs will also dim.

Anonymous · Accepted Answer

If you want only the LEDs to shine, you need to provide + 12V through the switch. In order for the voltage not to go back on the lighting lamps, you need to use a rectifying diode that will pass current to the LEDs and close the flow to the bulbs. conversely, nothing will happen, only the LEDs won't light up.

Jaznbu · Answer

How to make them turn off simultaneously? Is it possible at all? Unless I replace the bulbs from the cabin lighting with LEDs, hmm And it is impossible to do it differently, i.e. to go out without the switch

Jaznbu · Answer

Well, yes: I connected to the cube of the lamp in the headliner and there was a problem: 3 cables come out of the cube: brown blue and yellow green. One is probably a plus, another minus and the third I have no idea. In any case, the trial and error method I connected the led strip and it lights up normally when opening the door and dims when closed. How to do now so that when the door is closed, when the strip is off, I can light it with the ON / OFF switch? I thought then about the third cube cable, because I connected it like this: I connected the yellow green cube cable to the plus in leds, blue to the minus and everything is nice, but when I connected the third cube cable (brown) together with the blue one which is connected to the led cable the strip lights up, but all the lights in the cabin come on and I want the LEDs to glow without lighting the cabin. I attach a diagram, what did I do and it seemed to me that the switch in the closed position should close brown with blue and black? Because if I do, it's bad 20180403_1..358.jpg Download (943.68 kB)

Anonymous · Answer

LEdy will shine you just like the lighting. You can add a switch with a plus to the LED, with a rectifying diode as a check valve (protection against light bulbs)

Jaznbu · Answer

I am a complete layman and I did not understand what it was about hmm I thought more about whether there is an on / off switch which, for example, in the ON position will light up the leds even though the door is closed and the off switch will only light when the door is open. Something from my diagram that the ON position shortens me the BLACK and BLUE cable, and the BLACK and BROWN cable in the OFF position. There is such a thing? Maybe such a thing will do the trick?

Jaznbu · Answer

And on which section of my diagram this diode should be and where to buy such something

Anonymous · Answer

Anywhere between switch and + LED. What LED power. If you buy 5A (better than less) it should be enough and it shouldn't even heat up. In an electronics or car parts store, you can take up to 30A or more - it depends on the price.

Jaznbu · Answer

mn997 probably for you it's a piece of cake, so could you draw my drawing, how is it supposed to look like? I would ask you very much. Thanks in advance

Anonymous · Answer

I cannot draw. Again . You connect the wire to + 12V on the cigarette lighter or better on the radio. ON / Off switch, LED and to the + Led wire. If it doesn't work, you turn the diode. Nothing will happen if the diode is connected in reverse. Only. that the LEDs will not light up after turning ON. Better from the radio. because if you remove the key and do not switch to OFF, the LEDs will turn off and they will start to glow after turning on the internal lighting and they will go out with it. Possibly ask.

Jaznbu · Answer

I understood it like this: 20180403_2..605.jpg Download (988.72 kB) Well?

Anonymous · Answer

Additionally, as before, there is a second green LED for the lighting lamp. They probably won't bite. Draw. Extend the red to the green. With two LEDs, both the lamp and the radio will be cut off from each other.

Jaznbu · Answer

Something like this?

20180403_2..411.jpg Download (889.91 kB)

And it will work? Because I don't know if we understand each other.
I open the door with the remote control: the cabin illumination and LED strips under my feet are lit. I open the door and it still has to shine.

I close the door and the cabin lighting goes dark after 20 seconds of inactivity along with the led strip or it starts to darken after turning the key in the ignition switch (because that's how the lighting of the cabin to which I plugged in goes out).

Now let's say something fell under my feet and I want to light the switch with the strip itself, so this switch is ok in this picture together with these LEDs?

Jaznbu · Answer

I found such a solution. I will buy such a switch:

0867a41d4a...8e7f80.jpg Download (21.34 kB)

And now there: a black cable from the LEDs is put on the middle pin, a brown cable on the left pin and a blue cable on the right.
It seems that I should get the effect I want, that is: in the position on the left wire, the LEDs shine all the time, and in the position on the right wire, the LEDs shine when the door is open and after turning the key, they darken. In addition, it is possible to completely turn off the LEDs. I guess because I don't know if I think well

Anonymous · Answer

I understand that you have + 12V on brown and yellow - green (in the lamp)? if so, turn on the red LED to the middle pin of the switch, and to the extreme ones give + 12V from the dimmer and + 12V being constantly. What I suggested earlier will work, but your proposal is easier to implement. My solution made it possible to turn off the LED by removing the key.

VW Golf 4: Interior Lighting Dimmer Location & LED Strip Connection for Synchronized Dimming

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