FixedWing

<center><img src="http://gallery.rennlist.com/albums/albuq92/AudiS4_2919a.sized.jpg"></center><p>I know some of you without ESP have substituted an fog-light/ESP switch for the fog-light/blank switch in the car and then used the ESP switch (with a relay) to control various things (alarms, radar detectors, etc.).

What I need to know is does the ESP switch have an indicator light which can be hooked up in such a way that it is lit whenever the power is switched on for that switch? How is this light wired in? The light is a simple single colour on/off light, right? Thanx.

Oh, the photo offers a little tease for what will be switched. :-)

Stephen

Leif S4

ESP off triggers a light in the dash... not on the button

FixedWing

What is immediately behind the button? I might need to drill a small hole to mount a light.

Thanx.

Stephen

flying_low

<center><img src="http://www.netconnecters.com/audi/images/asr_button.jpg"></center><p>Controls stealth mode * lights.

RobC

I've got a 2000 which had a blank button where the ESP button goes. I purchased one from Clair and used it to switch my EDL in and out.

The button contains a momentary switch configured in such a way to make debouncing easy with a few gates. The LED already has a dropping resistor so all you have to do is apply 12V to the appropriate pin.

NEPaNogaro

letters.

It is momentary, so like RobC said, you will need a flip-flop, relay, transistor and debouncing circuit to turn things on and off. (You can make it easily turn on things without the debounce and flip flop, but they will have to turn off with another button or ignition.)

wehyaseh

Maybe a fog switch might work in the esp location.

Mark P

R: anti slip Regulation

RobC

I was mistaken about the LED. There is one but it's for the the ESP illumination which I used to indicate when EDL on or off. It's hard to see during the day, but works very well when it gets darker.

FixedWing

But it would be upside down....