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Trunk light replacement

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Old Apr 13, 2016 | 02:03 PM
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Default Trunk light replacement

So, the trunk has a single LED mini light connected with some 0.35qmm (no idea what AVG that is) or less wire. I would like to connect my 21 LED light strip instead but I don't know if the wires are thick enough to not melt down. I googled a little and it seems that the LED uses about 0.07W, so my 21 LED strip will use 1.26W which is about 100mA. Can a 0.35qmm wire handle that load?
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Old Apr 13, 2016 | 02:46 PM
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.35mm diameter would be about 28AWG. However, that is really tiny, like wires in your cell phone tiny. I have never seen wires that small in a vehicle before. The smallest I would expect to see is maybe 22-24AWG.

Anyways: American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies and wire breaking strength

If it truly is 28, then max amps is 226mA. 22 AWG would be ~1A.
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Old Apr 13, 2016 | 03:26 PM
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Let me try to take some pictures tomorrow, it's the tiniest wire I have ever seen in a car. It's definitely not 0.5 and even .35 looks thicker as far as I can tell. But 200mA would be more than the 100mA that I need, so it might be worth a try.
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Old Apr 14, 2016 | 07:56 AM
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This is a picture of the wires

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Old Apr 14, 2016 | 04:02 PM
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Yea my guess is that is a bit larger gauge than 28, regardless, even 28 should be fine for your LED array. A good reference, the wires inside your ethernet cable are most likely 26AWG, sometimes 24AWG. So 28 is even smaller than the wiring inside your ethernet cable.

Last edited by Erasmus354; Apr 14, 2016 at 04:33 PM.
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Old Apr 15, 2016 | 09:06 AM
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here are some steps to replace the bulbs with LED
https://www.audiworld.com/forums/q7-.../#post24798509
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Old Apr 15, 2016 | 09:12 AM
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Got it installed and the car didn't burn down

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Old Apr 15, 2016 | 09:41 AM
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Thanks for blazing the way! How did you attach the light strip?
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Old Apr 15, 2016 | 10:00 AM
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just double sided tape
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Old Aug 2, 2016 | 01:29 AM
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Originally Posted by AudiA4B6US
Got it installed and the car didn't burn down


So how did you connect the led strip to the light? Is there a special connector? I'm looking into doing this myself and not sure what to do. Guess you hooked into the wire?

Took a look at the light itself, it looks like a custom LED chip, no bulb to hook into. In previous cars, I just use an adapter to plug into the wedge or festoon, but there is none on this car.

Front of LED chip:



Back of LED chip:
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