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Where do I run a wire through the firewall(s)

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Old 08-08-2002, 03:26 PM
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Default Where do I run a wire through the firewall(s)

I know some of you have had to run a wire for (foglights etc) through the A4 firewall(s). Where's the best place to run the wire through, and how do I find it?

Thanks
(searched the archives, but there was only one post about the vacuum line)

Antony
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Old 08-08-2002, 03:29 PM
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Default Depends on the year

Some have a grommet to the right of the battery (see pics).

If you don't have that, you can run through ECU box, but I don't recommend this for power wire for an amp, but it's fine for boost line.

<img src="http://24.26.38.255:8080/audi/boostguage/rear_firewall_grommet.jpg">
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Old 08-08-2002, 03:30 PM
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Run the wire(s) in and out from the ECU box.
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Old 08-08-2002, 03:31 PM
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Default Try going through the ECU housing.

If you're facing the front of the car, there's also a rubber grommet left of the steering wheel column to run wiring through as well.
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Old 08-09-2002, 04:46 PM
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Thanks for your help. I'll start looking...!
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