Fuse tapping in 2009 A4 B8
07-10-2018, 06:08 PM
#1
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Fuse tapping in 2009 A4 B8
Hello, I have a 2009 A4 B8.
I plan to tap into one of the fuses for a remote turn on for an amplifier.
The fuse box is in the trunk behind the small storage section to the right.
I don't have a multimeter and I need a fuse the is only on in ACC mode.
Can anyone help?
Thank you!
-Hunter
I plan to tap into one of the fuses for a remote turn on for an amplifier.
The fuse box is in the trunk behind the small storage section to the right.
I don't have a multimeter and I need a fuse the is only on in ACC mode.
Can anyone help?
Thank you!
-Hunter
07-10-2018, 08:27 PM
#2
If you like a clean installation you can get information in the linked DIY how to install a new fuse for your control line (I used the wire "000 979 227E").
I think your best chance for success is to get a DVM or one of those simpler "voltage detectors" for cars, and measure, because the use of and location in the fuse box varies with model years and the actual equipment in your car. (I succeeded to find an (empty) fuse location in my previous 2008 B8 that followed the ignition status, but in my current 2014 B8.5, all (empty) locations are ON constantly.)
In my 2008 I used the fuse location RED nr 7 that followed the ignition status, but that might not be the case in your car.
DIY: AudiEnthusiasts Accessory Plug
I think your best chance for success is to get a DVM or one of those simpler "voltage detectors" for cars, and measure, because the use of and location in the fuse box varies with model years and the actual equipment in your car. (I succeeded to find an (empty) fuse location in my previous 2008 B8 that followed the ignition status, but in my current 2014 B8.5, all (empty) locations are ON constantly.)
In my 2008 I used the fuse location RED nr 7 that followed the ignition status, but that might not be the case in your car.
DIY: AudiEnthusiasts Accessory Plug
07-11-2018, 12:48 PM
#3
AudiWorld Super User
How are you doing car electrical work and not have a multimeter? That aside, the four 15A fuses at the front of the D row are for the 12V outlets and are ACC switched. You might not have the fourth one if it's a sedan; I have all four in my wagon.
12-10-2019, 07:13 PM
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Audi wont start
I have a 2004 Audi A8L I've got power to the instrument cluster and the rest of the car but I cannot turn it over I'm popping codes p0600 and u0101 if anybody knows what's going on or can help out in any way shape or form please get back to me ASAP been stuck for 2 days
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