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Discussion Starter #1
Hi,

I am planning to hardwire a dashcam on my Q3. Just started poking around and doing some research yesterday. I am considering to use the add-a-fuse thingy to tap into the fuse box.

But looking at the fuse box (the one behind the small storage box below the steering wheel), seems like the space is a bit tight, I am not sure if it can even fit the add-a-fuse thingy (ie the storage bin cover might not able to close).

And apparently, there are 2 different sizes of fuses being used. I think they are the standard ATO and Mini. Since the minis are probably slightly shorter in height, I think I will try to tap on the mini fuses.

Anyone has experience on hardwiring in a Q3 and would like to share some information?

Thanks,
 

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Never done this but I know there are specific forums out there on lighting, retrofit source is one of them, you might be able to pull answers from some of the lighting pros on the forum.
 

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There aren't usually problems with this, but the normal "be careful" about stacking too much current on the line you tap. Remember that the upstream wiring that you tap has to take BOTH loads not just one or the other ... current is simply cumulative unlike resistance.
 

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Hi,

I am planning to hardwire a dashcam on my Q3. Just started poking around and doing some research yesterday. I am considering to use the add-a-fuse thingy to tap into the fuse box.

But looking at the fuse box (the one behind the small storage box below the steering wheel), seems like the space is a bit tight, I am not sure if it can even fit the add-a-fuse thingy (ie the storage bin cover might not able to close).

And apparently, there are 2 different sizes of fuses being used. I think they are the standard ATO and Mini. Since the minis are probably slightly shorter in height, I think I will try to tap on the mini fuses.

Anyone has experience on hardwiring in a Q3 and would like to share some information?

Thanks,
There's a great vendor in Canada that sells and ships to USA.

BlackBoxMyCar
He also had Youtube videos on how to hardwire Audis, BMWs, VWs etc. under "how to install"
 

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Discussion Starter #5
Thanks for the advice and info guys!

I will report back once I am done with this little project. Thanks!
 

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Please give us the details (and pics too) of your camera choice and results - many thanks !!
 

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Discussion Starter #8
Finally sort of got it done last week. "Sort of" because I still haven't finalized where to mount the camera itself (as my dashcam is a bit big), but at least the circuit part (with Power Magic Pro) is done and it is working as expected.

I have taken a few pictures & notes and will post them when I have more time during the holidays. Hope it might help some of you.
 

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Finally sort of got it done last week. "Sort of" because I still haven't finalized where to mount the camera itself (as my dashcam is a bit big), but at least the circuit part (with Power Magic Pro) is done and it is working as expected.

I have taken a few pictures & notes and will post them when I have more time during the holidays. Hope it might help some of you.
That would be great since my dashcam is on its way. I purchased Blacksys CH-100B, which has a built in voltage shut-off.

It would really help me to see which fuses you tapped into and how you hid the wires.
 

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Discussion Starter #10
Finally I have a chance to write this up. I hope it can help out some members or at least speed up the installation a little bit. By no means this is the only way, and in fact it may not be the proper way even though it works for me. So use it at your own risk!

I have a Vicovation dashcam which has the parking mode feature. In general if you are interested in using the parking mode (or want to leave the dashcam on even when ignition is off) you probably want some kind of controller. I got the Power Magic Pro as the controller. There are 2 modes:

1) On and off with ignition - Controller will cut off power to the dashcam when ignition is off.

2) Always On - Controller will cut off power based on the car's battery voltage and timer (whichever comes first). This is to prevent the dashcam draining the car's battery.

Basically the controller needs to hook up 2 wires to the fuse box. One for always on, one goes with the ignition. And of course one for ground. It provides a 12V socket for connecting to the dashcam.

I also bought 2 "add a fuse" wires for tapping into the fuse box.



Instead of crimping the wires directly to the "add a fuse" wires, I hooked them up through some connectors. I thought it will be easier in the future in case I change to another controller.



Here is the ground, just below the fuse box compartment (btw, the fuse box is behind the little compartment, lower left of the steering wheel).



I was tapping to fuse #5 and #18 . #5 for the ignition wire and #18 for the always on wire. According to the manual, #5 is the left headlight and #18 is the TV Tuner. I don't think I have any TV Tuner related features at all, so I am not exactly sure, but it does sound like a non critical component to tap on.



Here are all the wires. Basically connect the ignition and always on wires to the corresponding "add a fuse" wires. The black ground wire and the white connector will be routed behind the compartment and come back out near the ground screw.



To hide the big batch of wires, I tied them up above the fuse box.



When it's all done, only the 12V socket will be left in the compartment.



The ground and the connector for the controller.



Last step is to hook up the controller. The controller is very light, I just use a double side tape and put it near the ground screw.

Once the circuit is working, it's really up to you where to mount the dashcam. Depending on the size/form factor of your dashcam, you might not have many choices. My dashcam isn't very small, I find it a bit large if mount on the windshield. For now I just mount it on the dash besides the MMI screen.

Hope it helps!
 

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This helped tremendously! I will take some pictures as well when I get mine installed. Thank you!
 

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Discussion Starter #12
You are welcome! Let us know how it goes.

I am also considering to have one for the back as well. But I will probably just use the existing 12V socket in the trunk.
 

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I tried hard wiring my dash cam Blacksys-100B which came with a hard wiring kit (not power magic pro, but the dash cam has voltage cut off built-in and a hard wiring wires came with it).

I tapped into always on fuse such as "keyless entry" for ACC (yellow wire) and ignition on fuse such as "front 12-volt outlet" for B+ (red wire) and ground wire to a metal bolt under the fuse box, but the dash cam does not come on, with and without ignition.

When I use the regular cigarette jack to power the dash cam, it works.

So I'm guessing the hard wiring wire is defective or I'm using work fuses (20 amp fuses) for the add a fuse wires to power the dash cam.

Should I be using 30 amp fuses like Edward?

I even tried to wrap the hard wiring wires directly to the fuses in the fuse box but still no power...

What should I try next?
 

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Nice write-up and pics - thanks for this - I may using it as a guide soon ...
 

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Discussion Starter #15
I tried hard wiring my dash cam Blacksys-100B which came with a hard wiring kit (not power magic pro, but the dash cam has voltage cut off built-in and a hard wiring wires came with it).

I tapped into always on fuse such as "keyless entry" for ACC (yellow wire) and ignition on fuse such as "front 12-volt outlet" for B+ (red wire) and ground wire to a metal bolt under the fuse box, but the dash cam does not come on, with and without ignition.

When I use the regular cigarette jack to power the dash cam, it works.

So I'm guessing the hard wiring wire is defective or I'm using work fuses (20 amp fuses) for the add a fuse wires to power the dash cam.

Should I be using 30 amp fuses like Edward?

I even tried to wrap the hard wiring wires directly to the fuses in the fuse box but still no power...

What should I try next?
Tanqueray,

1) The max amp rating for the fuses shouldn't be matter too much as long as it's enough for the dashcam (but you don't want it to be too big either, otherwise it won't able to protect the circuit). I am actually using 3A fuses for the camera circuit, the pictures were taken before I replaced them with 3A fuses. The camera should be using very little current, 3A should be enough.

2) Sounds like you are hooking up the wires correctly. I would recommend to make sure the ground wire is attached tightly. I had similar issue initially, turns out the ground wire wasn't attached tightly to the screw. If it still doesn't work, you can also try temporary touching the ground wire to the door hinge as the ground (I used the door hinge as ground when checking out the fuses with my voltmeter). If it works this way, that means it's the ground connection issue.

Good luck!
 

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2) Sounds like you are hooking up the wires correctly. I would recommend to make sure the ground wire is attached tightly. I had similar issue initially, turns out the ground wire wasn't attached tightly to the screw. If it still doesn't work, you can also try temporary touching the ground wire to the door hinge as the ground (I used the door hinge as ground when checking out the fuses with my voltmeter). If it works this way, that means it's the ground connection issue.

Good luck!
Like you mentioned, ground was the issue! I was using the metal nut that's holding the fuse box in place inside the driver glove box compartment, instead of the torx screw that's outside the compartment.

I ordered power magic pro anyway because I wanted to have more control over when the dashcam is on or off.

Thanks for the help Edward!
 

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Discussion Starter #18
Glad that it's working out for you!

Same as you, initially I was trying to use some of the screws/nuts inside the glove box as ground but none of them worked. So at the end I used the torx screw outside instead (as seen in one of the pictures).

Where did you mount your dashcam? Currently I am just mounting it on the dash near the MMI screen. I would like to mount it near the rear view mirror, but my dashcam is a little big for that.
 

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Glad that it's working out for you!

Same as you, initially I was trying to use some of the screws/nuts inside the glove box as ground but none of them worked. So at the end I used the torx screw outside instead (as seen in one of the pictures).

Where did you mount your dashcam? Currently I am just mounting it on the dash near the MMI screen. I would like to mount it near the rear view mirror, but my dashcam is a little big for that.
I mounted it right below the rear view mirror.

Blacksys CH100B looks like this so it fits nicely under the rear view mirror mount.


At what voltage did you set to shut down the dash cam?
 

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Discussion Starter #20
I like the flat form factor of your dashcam. It makes it a lot easier to mount without blocking the view too much.

My Power Magic Pro is set to shut down at 12V. But it is set to Ignition On for my regular daily routines. The idea is when park in more "dangerous" area, then I will switch to Always On by flipping the on/off switch. Then it will shutdown either at 12V or 6 hours (configurable), whichever comes first.
 
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