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Old 9th September 2019, 13:29   #1
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Default VW Polo DIY: Installing the OEM Rear Dome Light

The Polo sold in India does not come with either a rear dome light or rear footwell lights, and the lack of illumination has always been a source of irritation to me. I had installed the rear footwell lights (My pre-worshipped Volkswagen Polo GT TSI with lots of DIYs) some time back. After some research on the www, I came across this and this thread on a Russian automobile forum, and decided to install the rear dome light as a DIY project in my GT TSI.

The most daunting task seemed to be removing and refitting the headliner, and it took a lot of self-belief for me to develop enough confidence to go ahead. Looking back over the past one year, my abilities as a DIYer have definitely grown, and this is actually my first major DIY that is not documented anywhere on our forum. I have usually picked up most ideas from mod Gannu's threads, and the level of detail in them takes all the uncertainty out of the picture.

Last edited by TheLizardKing : 9th September 2019 at 17:33.
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Old 9th September 2019, 14:29   #2
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Default Parts Required

Main Items
  1. Rear Dome Light - 1 no. (VW Part Number 6Q0 947 291 A)
    Source: AliExpress
    Price: $14.60 + $3.90 shipping
  2. Frame for Mounting - 1 no. (VW Part Number 6Q0 867 599 G)
    Source: eBay
    Price: $12.79 + $4.00 shipping
  3. Foam Support - 1 no. (VW Part Number 1P0 867 639)
    I was not able to source this item even after a lot of searching, and decided to drop it from the installation process.

Connectors + Terminals
  1. 4B0 971 993 (1 no.) + N10 318 905 (3 nos.)
  2. 893 971 633 (1 no.) + N10 335 807 (3 nos.)*
  3. 1T0 972 703 (1 no.) + N90 684 405 (3 nos.)
Source: I sourced item nos. 1 and 2 from Boodmo. They took 70 days to arrive, which was the most frustrating part of the exercise. I later found them available as a much cheaper kit on AliExpress. Item no. 3 was included in the AliExpress shipment of the rear dome light.
*This assumes that you have the stock front dome light in your car. If you are using a different unit, please order the corresponding connector and terminals.
Consumables
  1. 1 mm sq. electrical wire
  2. Butt crimps
  3. Harness tape
  4. Fevikwik/Fevibond

Last edited by TheLizardKing : 9th September 2019 at 17:21.
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Old 9th September 2019, 14:49   #3
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Default Tools required

  1. Flat-head screwdriver
  2. Torx screwdriver with T20 bit.
  3. Utility knife
  4. Crimping pliers - regular (example)
  5. Crimping pliers for terminals (example)

Last edited by TheLizardKing : 9th September 2019 at 17:22.
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Old 9th September 2019, 16:12   #4
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Default Installation Steps

  1. Preparing the Harness

    VW Polo DIY: Installing the OEM Rear Dome Light-00-harness-schematic-drive2.jpg
    Referring to the above schematic* (adapted from the Drive2 forum thread), prepare the Harness for branching the input for the front dome light to power the to-be-installed Rear Dome Light. Be careful while crimping the terminals, since they cannot be reused. If you have never done it before, buy a couple extra to practice. They are pretty cheap. Also pay attention to the pin numbers while plugging the terminals into the connectors. If you make a mistake, you will need a terminal extraction tool (example) to correct it.
    VW Polo DIY: Installing the OEM Rear Dome Light-01-harness-prepared.jpg
    Here is a picture of the harness ready for installation.
    *This assumes that you have the stock front dome light in your car. If you are using a different unit, please use the appropriate pin configuration.
  2. Removing the Headliner
    This requires the following items to be removed: front dome light - 1 no., sun-visors (along with the clip brackets) - 2 nos., grab handles - 3 nos., rear headliner trim (the long one between the two C-pillar trims) - 1 no., and one small black plastic locking clip underneath the rear headliner trim. The VW technician whom I consulted said that all the pillar trims would also need to be removed, but I just slipped - carefully! - the edges of the headliner off the top of the pillar trims.
    Once the headliner comes off the roof, take it out slowly through the back of the car to your work area. As a general warning, please be careful while handling the headliner, since it is a delicate part and may develop creases if improperly handled.
  3. Installing the Frame

    VW Polo DIY: Installing the OEM Rear Dome Light-02-marking.jpg
    Mark the centre line of the headliner, and use the Frame as a stencil to mark the outline of the hole required to install it. There is no pre-marked position on the headliner fitted in the Indian Polos (as shown in the pictures in the Drive2 threads). I picked a position that falls on an imaginary line joining the front ends of the rear grab handles. You can also use the headliner of the Vento as a reference, if you have access to one.
    VW Polo DIY: Installing the OEM Rear Dome Light-03-cutting.jpg
    Please ignore the outline at the top of this and following pictures.
    Using a utility knife, carefully cut the headliner along the outline. It is advisable to use some kind of support under the headliner during this activity to keep it from bending and creasing.
    VW Polo DIY: Installing the OEM Rear Dome Light-04-glueing-frame.jpg
    After ensuring that it fits properly in the hole, stick the Frame to the headliner. I used Fevikwik for this purpose, but Fevibond may be a better option.
  4. Installing the Rear Dome Light

    VW Polo DIY: Installing the OEM Rear Dome Light-05-installing-light.jpg
    After the glue has dried, insert the Rear Dome Light into the Frame. It has four locking tabs. Squeeze the headliner at the location of these tabs by applying pressure from both sides, until you feel each tab click in place.
  5. Installing the Harness

    VW Polo DIY: Installing the OEM Rear Dome Light-06-installing-harness.jpg
    Using pieces of the harness tape, stick the Harness to the headliner as shown in the above picture. Plug the connector for the Rear Dome Light in. (Please ignore the top part of the above picture. While executing this DIY, I also upgraded the front dome light to the one found in the Passat.)
  6. Refitting the Headliner
    Take the headliner back to the car, and refit it by reversing the order of the steps used to remove it. Do not reinstall the front dome light.
  7. Connecting the Harness
    Pull the front end of the Harness through the hole for the front dome light. Plug the stock male connector that usually powers the front dome light into the female connector (4B0 971 993) of the Harness. Plug the male connector (893 971 633) of the Harness into the front dome light, and screw it back in place.

Last edited by TheLizardKing : 9th September 2019 at 17:36.
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Old 9th September 2019, 16:58   #5
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Default Result

I spent a lot of time (more than two months) in sourcing, ordering, and receiving the parts required for this DIY. So it was very satisfying to finally complete it. Here are some pictures of the completed installation.

VW Polo DIY: Installing the OEM Rear Dome Light-07-rear-dome-light.jpg

VW Polo DIY: Installing the OEM Rear Dome Light-08-rear-dome-light-.jpg
Let there be light!

I am very happy with the result. Along with the rear footwell lights that I installed some time ago, this DIY ensures that the rear of the car is as well-illuminated as the front - important from a safety and convenience point of view.

I would like to express my thanks to mod Gannu for guiding me from time to time, and partner-in-crime Viraat13 for being my sounding board and providing useful suggestions. Also, it would be remiss of me not to thank Google Translate for allowing me to make sense of the source Russian threads, without which I couldn't possibly have completed this DIY. And finally, a big thank you to my unknown Russian friends.

Last edited by TheLizardKing : 9th September 2019 at 17:05.
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Old 9th September 2019, 19:01   #6
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Note from Support: Thread moved to the DIY section. Thanks for sharing!
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Old 10th September 2019, 08:17   #7
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

So good to see this finally up. We've been talking about it for months it seems! Safe so say, you can't hide behind the garb of being an amateur DIY now.

I think the front dome lamp deserves some photos and a mention too.
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Old 10th September 2019, 13:10   #8
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Useful DIY for VW Polos. All I did was replacing the front dome light in my Rapid, plug n play. I know how much precision it needs to cut a rectangle at the exact center. Even the smallest of deviations will haunt you. I myself fiddle with scale and markings 'n' times to paste a sticker at the exact center .
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Old 10th September 2019, 13:59   #9
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

You have done an excellent job! The light just looks so stock. I want to upgrade my Dzire's manual IRVM to automatic ones but I am just too scared to do all these things.
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Old 10th September 2019, 17:14   #10
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Great DIY! Thanks for sharing! Would you mind posting pics of the front Passat light as well?
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Old 10th September 2019, 18:21   #11
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Thank you, everybody.

Quote:
Originally Posted by vijayshouree View Post
Useful DIY for VW Polos. All I did was replacing the front dome light in my Rapid, plug n play. I know how much precision it needs to cut a rectangle at the exact center.
Tell me about it. Luckily for me, this was a very small hole in a very large part, so I wasn't very worried.

Quote:
Originally Posted by Nazaar25 View Post
You have done an excellent job! The light just looks so stock. I want to upgrade my Dzire's manual IRVM to automatic ones but I am just too scared to do all these things.
It IS stock in the Polos sold abroad. The Vento sold in India also gets the same unit. I understand the apprehension. Something always goes wrong in every DIY project, no matter how big or small. The only way to minimize the risk is to do all the research well in advance, and make sure that you have the right tools. Also, lots of patience. Good luck!

Quote:
Originally Posted by s4ch View Post
Great DIY! Thanks for sharing! Would you mind posting pics of the front Passat light as well?
I'm going to make a post on my ownership thread about it very soon. Stay tuned!
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Old 10th September 2019, 22:06   #12
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Quote:
Originally Posted by TheLizardKing View Post
The Polo sold in India does not come with either a rear dome light or rear footwell lights, and the lack of illumination has always been a source of irritation to me.
Neat install. It is highly irritating when manufacturers skimp on such inexpensive, yet useful features, just to save a few pennies.

Why not swap those bulbs with LEDs?
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Old 12th September 2019, 10:58   #13
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Default Re: VW Polo DIY: Installing the OEM Rear Dome Light

Quote:
Originally Posted by s4ch View Post
Great DIY! Thanks for sharing! Would you mind posting pics of the front Passat light as well?
I've created a separate thread (VW Polo DIY: Upgrading the Front Dome Light) for it. Check it out.

Quote:
Originally Posted by McLaren Roxx View Post
Why not swap those bulbs with LEDs?
I'm a little old-fashioned, I guess. I prefer incandescent bulbs to LEDs. I find LEDs to be too bright. The only ones I like are the warm white ones. I'm also a fan of symmetry, so whenever I upgrade to LEDs, I'll want to change all the interior lights. Someday.
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