Ignition live wire

4.2 V8 32v Naturally Aspirated - 414 bhp
Post Reply
tailoredtattoo
Neutral
Posts: 12
Joined: Wed Mar 02, 2016 12:32 am

Ignition live wire

Post by tailoredtattoo » Wed Aug 10, 2016 10:52 pm

Hey,

Currently installing air ride. I'm told I need to tap into a non dipping ignition wire.

Can anyone help with locations (assuming no dipping means it don't lose power when cranking)

Cheers in advance

Robbie

User avatar
MB2
Top Gear
Posts: 1575
Joined: Tue Dec 15, 2009 10:21 am

Re: Ignition live wire

Post by MB2 » Fri Aug 12, 2016 4:57 pm

I cant remember exactly at the moment but I am sure if you drop the trim above the drivers legs there are plenty of feeds there and earth too as I wired about my detector and took the feed from down there.

Althernatively the fuse board is only a couple of screws to remove or follow something back from it (drivers side dash I think or possibly the passenger side) there is a panel that simply unclips and follow from there.

Or look at "add a circuit" which lets you piggyback off an existing circuit with a fused connection accessible from the fuse board rather than under the panels.

http://www.ebay.co.uk/itm/2-Add-A-Circu ... 0709632237

User avatar
MikeFish
Cruising
Posts: 15588
Joined: Tue Aug 31, 2010 9:23 pm
Location: The Middle of Somewhere

Re: Ignition live wire

Post by MikeFish » Fri Aug 12, 2016 5:12 pm

Yes the fuse board is behind the drivers side dash end cover which just pops off.

tailoredtattoo
Neutral
Posts: 12
Joined: Wed Mar 02, 2016 12:32 am

Re: Ignition live wire

Post by tailoredtattoo » Sat Aug 13, 2016 7:44 pm

Cheers guys.

I know there are loads of places to tap in to. But apparently certain circuits cut off power when ignition is turned. So it's made me just a bit wary of tapping into a circuit without any confirmation.

Maybe it's just a case of getting the tester out on each circuit and turning over the car to see if there's a drop in power.

So many conflicting things on the Internet about it. Just got me in a bit of a flap haha

User avatar
MikeFish
Cruising
Posts: 15588
Joined: Tue Aug 31, 2010 9:23 pm
Location: The Middle of Somewhere

Re: Ignition live wire

Post by MikeFish » Sat Aug 13, 2016 7:50 pm

Can't you ask the experts? Plush used to have air rie on their RS4 and have fitted it to others. Jules used to have air ride on his. Nils and Emz and CharlieD amogst others have it too.

jonson66
2nd Gear
Posts: 141
Joined: Tue Aug 09, 2016 5:40 pm

Re: Ignition live wire

Post by jonson66 » Mon Aug 15, 2016 5:04 pm

Fag lighter is usually a favourite amongst most cars. Could try checking this one

chirs4
Neutral
Posts: 3
Joined: Wed Jul 27, 2016 9:06 am

Re: Ignition live wire

Post by chirs4 » Mon Aug 15, 2016 5:11 pm

jonson66 wrote:Fag lighter is usually a favourite amongst most cars.
IIRC the fag lighter on an RS4 is permanently live.

jonson66
2nd Gear
Posts: 141
Joined: Tue Aug 09, 2016 5:40 pm

Re: Ignition live wire

Post by jonson66 » Mon Aug 15, 2016 5:17 pm

Well that was a good educated guess lol

tailoredtattoo
Neutral
Posts: 12
Joined: Wed Mar 02, 2016 12:32 am

Re: Ignition live wire

Post by tailoredtattoo » Tue Aug 23, 2016 12:23 am

Cheers guys

I bought the kit from luke. He couldn't help me with what wire to tap into just 'needs to be non dipping ignition'

Need to pull my finger out to finish it off now! Only thing holding me up. So many conflicting suggestions about

Badman
2nd Gear
Posts: 115
Joined: Mon Sep 19, 2016 12:11 am

Re: Ignition live wire

Post by Badman » Tue Oct 18, 2016 7:48 pm

Hi guys I need a bit of help.

I'm installing a dash cam smart power device

It has 3 wires

Black - earth
Yellow - permanent power
Red - power when ignition on

Couple of questions

Where is best to earth it ? See pic - can I earth using the screw above the fuses ?

And which fuses are permanently on and which fuse goes on with the power?

See pic

thanks
Attachments
earth wire.png

User avatar
Ian_C
Cruising
Posts: 6613
Joined: Fri May 07, 2004 10:11 pm
Location: Bedford

Re: Ignition live wire

Post by Ian_C » Tue Oct 18, 2016 8:16 pm

Yep, that would be a good earth. :thumbs:

On the Audis I tend to aim for the rear wiper fuse for the switched ignition power. I vaguely recall trying to use the horn first time I tried wiring a dashcam, but found that still worked after I turned the ignition off. There are a few circuits that work for a certain 'time' with the ignition off - electric windows for example.

Edit for clarity - the ones I've fitted to our cars simply power up the dashcam when the ignition is on
B5 B6 B7 B9

Post Reply

Return to “RS4 (B7 Typ 8E) 2006–2008”

Who is online

Users browsing this forum: r8wut and 259 guests