Viofo A329S and Rear Dashcam Install in BMW G21 320D

Astonred

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Hi,

I posted on a BMW forum I use, and one of the member mentioned DashCamTalk. So I thought someone here might find it useful.

Ok, so I finally bit the bullet (read amazingly saved up a bit of spare cash and didn’t instantly spend it on beers or women. Ok, beers then) and after much procrastinating decided to purchase a Viofo A329S. It was a toss up between this and a Blackvue.

I was going to go with BMW’s Advance Car Eye Pro 3.0 and have them fit it for £675! However several beers later I had purchased the A329S for the same price as the BMW unit, and thinking how hard can it really be to fit.

My main reason for the A329S was that I wanted something fairly unobtrusive and permanently in place, it is fairly small and neat and has a screen, also 4k @ 60fps (so long as you turn off HDR otherwise its 30fps). Video for both front and rear is very impressive particularly low light and night, clear and smooth, exported frames are excellent.

Tools I Needed

Torx Bits
Flat blade screw driver
Trim Tool (one comes with the Dashcam)
Push Rods/Cable Access Kit
Many cups of Tea
A Friend – In my case I used a Raoul an older 1970's model, but crucially came with the aforementioned push rods also handy for making tea as well.

I also managed to find on the line PDF’s for the ACE 3 BMW installation instructions for G42, G20, G80, G21, G21 PHEV, G22, G82, G26 ICE, G23, G83, G29 and BMW Headliner Removal instructions for a G20, which helped immensely.

So To The Install

First check the unit works, believe me nothing more annoying that running cable to find the cable is a dud!

Mounting Main Unit

Think about where you are going to place the unit. I went here:
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The reason the cables can poke out from the corner of the headliner by the mirror unit and it is hidden reasonably well when looking in from the outside.

I cleaned the area of the window with a couple of alcohol screen cleaner wipes and placed the static sheet* originally half on and half off the shaded part of the windscreen, which looked awful from the outside. So peeled off re-cleaned the window and used a second static sheet and placed it fully in the shaded area of the screen. Now to stick the unit on the static sheet I quite by chance managed to find a small bock of wood to butt up to the headliner which enabled me to stick it on pretty level.
*apparently the static sheet allow you to remove the camera without leaving any glue on the windscreen.

Rear Cable Install

We (this is when the friend comes in) decided we would try and run the cable to the C pillar then down and along the doorsill trims to then up the passenger A pillar.

We removed the glass hatch hinge cover two Torx screws and using the push rods tried to see if we could get to the C pillar, only to discover we managed to get pretty much all the way to the front with virtually no resistance, we got at least level with the passenger grab handle.

A couple of teas later we decided to open the A pillar trim by prying off the airbag plastic tab, thin blade will do this easily, undo the Torx screw and a firm pull will pop of the top of the trim, if you want to fully remove it you need to wiggle it towards and away from the windscreen to get the two prongs out. This allowed us to run a finger along the headliner, door seal and B pillar. We then removed the front grab handle, this bit was by far the hardest, most time consuming part. With the help of the headliner removal PDF and YouTube we finally managed to remove the handle. Use a trim removal tool to pry off the plastic covers, then a flat blade screwdriver to lever out the clips. Insert screwdriver in green highlighted area and lever the screwdriver down then do the same with the red highlight levering the screwdriver up. The top part is quite well hidden.
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When re-installing the handle if it feels loose and the covers are really hard to get back in, pry apart the clips with a screwdriver and it should go back in good and tight.
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We also removed the small square plastic bit (what is this called and for?) only held in by one Torx screw, near the rear grab handle. This allowed us enough play to get a hand up into the roof (and crucially not crease the roof lining -small hand help here) to try and grab the push rods. Please note the airbag is up here so be careful not to mess with that.

After several attempts successfully grab the push rod and pull it out. Tape the cable to the other end and gently pull the rods though, guide the cable up to the A pillar. When pulling the rod back out try and use the rod to keep the cable away from the airbag. Use the trim removal tool to push the cable under the front of the headliner up to the dashcam and plug the cable into the unit. This was the bit I wasn’t looking forward to as it seems to be on really tight, however the trim tool made this really easy and you would never know it had been disturbed.

The glass hatch boot trim will just pop off with a good pull. I went with small cable ties to secure the cable to the cable run on the boot hinge (don’t put the ties around the whole hinge as it will interfere with re-installing the cover) securing the cable on the inside of the cable run.

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I decided to coil the excess and store it behind the boot trim, I thought this would be better than in the roof liner, my theory being less to interfere with the hinge, and less to rattle in the roof not that I think that would be much of an issue.

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Hardwire Dashcam with HK6 Cable

I started by removing fuse cover in driver's side footwell connected the hardwire kit to test, once all was good crimped on fuse taps, and cracked on installing cable.

I connected the ground wire to the ground point on the car located behind the carpet where the accelerator is. Just loosen the nut attach cable and re-tighten.
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Then I used the empty fuse slots yellow highlight is Accessory and red highlight permanently on.
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One thing to note here is there isn't much clearance between fuse taps and fuse cover when you re-install it, if you leave re-installing the drivers glove box until last you will be able to see if the wires are all clear and nothing is trapped/caught etc.

I started by removing the A pillar cover as before.

Then the central mirror dome. Remove the grill part with a thin blade/trim tool, it just clips in.
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Then the two Torx screws. There are yet another two annoying clips to do, different to the grab handles. Using a screwdriver/trim tool you need to push the metal part you can see horizontally, to push the metal clips in so the light drops down (easy when you sodding know!!). The metal part of the clips appear in the yellow highlight when the light is attached. The metal clips sit in the black plastic recess.
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I also removed the plastic cover around the rear view mirror, this just pull apart by splitting down the middle.

I then removed the small glove box by the steering wheel via the three Torx screws, one either side and one in the back of the box it just pulls out, I found it much easier with this out to push/pull the cable from the corner of the A pillar.
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I started by running the cable up and tucking it in the headliner using the trim tool, then fed the cable through the rubber grommet so the cable came out the front near the rain sensor. Being very mindful of two small black wires that are attached to the windscreen glass. I then attached the power cable to the unit base.

I then fed the cable through the front of the dash by the A pillar following the cable run that was already there, I did struggle a bit here and ended up poking a long cable tie up from inside to the tape the cable to, then pulled it through.

I used some small cable ties to attach the cable to the existing cable run going up the A pillar. Be mindful of making sure the cable doesn’t get in the way of the pegs that attach the trim back onto the A pillar. I had to move the cable a little bit to give the posts on the trim enough room to go back on.

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Then I coiled up excess cable near the fuse box, and re-attached all trim.

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It's been several days now and the dashcam works flawlessly recording when I unlock the car and drive then going into hybrid park mode when I lock it and walk away.

Hybrid park mode a combination of two parking modes: time-lapse 1fps and impact, low bitrate and impact, event detection and impact. The hybrid mode begins with time-lapse 1fps, low bitrate, or event detection, and switches to impact detection based on the cut-off time or voltage. There is a voltage cut off hardware switch I set to 12.2v (selectable options of 12.4v, 12.0v and 11.8v as well), supplied with the cable and so far no battery management messages.
 
Very nice write up. I like seeing and hearing your ideas.
 
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