Barn-door To Tailgate Conversion

[HoopDub]

Hi all about to start my barn door to tailgate swap, can anyone confirm the routing of the pipe/hose supply from washer bottle to tailgate for the rear wash wipe..I can see its part of the tailgate loom then connects to rest of the feed pipe which will route with the main wiring loom along left hand of roof towards front of the van.

How does it get from the roof a pillar area into the engine bay please ?

I want it to look as factory fitted as possible !
Tia

I can't help much with this as i de-wipered my tailgate. You may be able to find the route using parts catalogs, if you go on lllparts.co.uk you can search the vw parts books and see if that helps.

Hi guys, firstly I wish I had read more than the first few pages of this thread before I went ahead of the conversion! Due to the peeps having the stress cracks. Everything else has gone smoothly.



So my model is a T6.1 and just wanting to know if I’ve missed something; with the wiring I just hooked up the old barn door loom to the tailgate and everything worked. Only thing I had to do is reverse the polarity going to the unlock solenoid. The boot release from the barn even worked when there wasn’t one on the tailgate loom. So is the T6.1 different because I thought I was going to have to run cables back to the BCM?



Only annoyance left are the LED number plate lights are throwing an error and the I need to change the struts. Hoping as has been discussed the T5 ones will be long enough!



Picture for illustration purposes:

View attachment 267244

Bit easier on the 6.1 wiring wise, as you have seen. You will probably need to change some coding in the bcm to tell it the number plate lights are now led. The adaptation options on the 6.1 are a lot more complex than the 6.

 

[Squiz]

Thanks for your input Hoopdub good tip about LLL parts books, I bought some bits off them for the swap !

 

[Squiz]

Hi again all,

I have converted from barn door to tailgate, when I turn ignition on to start van the first thing that happens pretty much is the central locking unlocks. I read that I need to connect one of the existing barn door wires that are now redundant back to earth to stop this happening..I read it in a thread somewhere but can't for the life of me find it again ! It's presumably one of the 3 wires that used to run to the old barn door lock !
Can anyone help...ta

 

[PhillH]

Hi again all,

I have converted from barn door to tailgate, when I turn ignition on to start van the first thing that happens pretty much is the central locking unlocks. I read that I need to connect one of the existing barn door wires that are now redundant back to earth to stop this happening..I read it in a thread somewhere but can't for the life of me find it again ! It's presumably one of the 3 wires that used to run to the old barn door lock !
Can anyone help...ta

Post 4 mentions earthing one of the wires
Also post 48 is how I done it

Barn-door To Tailgate Conversion

HOW TO TAILGATE This is a guide to replacing the barn doors on your T6 with a tailgate. The conversion is in itself simple, with the parts being bolted on, and falls in to three elements - having the parts present, having the tools available, and having the electrical system altered. Parts...

www.t6forum.com

 

[Squiz]

Hi Phillh,

Thanks for the reply !

I made up a plug in loom as per post #4 from t17o tailgate plug to t17c original barn door connector so didn’t need to destroy the original barn door harness.

Connections.
The tailgate has it's own harness with a 17pin connector joining it to the van.
1 - Lock - From Pin14 on the tailgate 17pin connector to Pin10 on the black plug of the BCM.
2 - Switch - From Pin13 on the tailgate 17pin connector to Pin23 on the black plug of the BCM. (If you want any additional switches to open the tailgate, just add another switch in parallel earthing Pin23 from the BCM)
3 - The tailgate needs an earth. Pin 15 needs connecting to the earth point down the D-Pillar near the rear light.

Pin 10 from t17o an earth I have connected.. i do have interior light function and door position function working I think from this earth

Pin 15 from t17o is the larger earth wire needed for the number plate lights, and high level brake which I have working happily.

New wires from t17o to bcm for tailgate locking and switch operation I haven't run yet or indeed gotten into any coding yet.

What I can’t find is where to connect the old barn door wires from t17c Pins 11, 13 14 and 15 which are all to do with original barn door locks and are all left un connected at the moment, i think these hold the key to my central locking unlock as soon as I turn ignition on ?

Thanks for any input !

 

[Ads_Essex]

@Littleblackflash might remember the answer to this..

 

[HoopDub]

Hi Phillh,

Thanks for the reply !

I made up a plug in loom as per post #4 from t17o tailgate plug to t17c original barn door connector so didn’t need to destroy the original barn door harness.



Pin 10 from t17o an earth I have connected.. i do have interior light function and door position function working I think from this earth

Pin 15 from t17o is the larger earth wire needed for the number plate lights, and high level brake which I have working happily.

New wires are run to from t17o to bcm for tailgate locking and switch operation

What I can’t find is where to connect the old barn door wires from t17c Pins 11, 13 14 and 15 which are all to do with original barn door locks and are all left un connected at the moment, i think these hold the key to my central locking unlock as soon as I turn ignition on ?

Thanks for any input !

Pin 11 13 and 14 from barn door T17c you can just tape up and leave. Pin 15 from barn door T17c needs to be connected to Tailgate loom T17o/10.

 

[Squiz]

Hi Hoopdub, Thanks again for your input thats great here's where I'm at with the wiring, I did already connect pin 15 T17c to pin 10 T17o I sent this to Ads too


T17c Original van side 17 pin connector with existing wiring colours and pinouts and where I connected them.

Pin 1-6 empty.
Pin 7 Grey & Blue.................to pin7 t17o.... number plate light
Pin 8 Black & Red................to pin 8 t17o.....brake light
Pin 9 Brown & Blue...............to pin 9 t17o...think this is door contact switch to show on dash if tailgate open
Pin 10 Brown.........................to D pillar earth
Pin 11 Blue + Green
Pin 12 empty
Pin 13 Purple
Pin 14 Brown + Yellow
Pin 15 Brown + Black...........to pin 10 t17o.....think this is for interior light to work on door open
Pin 16 empty
Pin 17 empty

T17o new tailgate 17 pin connector

Pin 1 empty
Pin 2 empty......................will wire to extra internal tailgate release switch for illumination only not operation
Pin 3 rear wiper.................yet to do
Pin 4 rear wiper..................yet to do
Pin 5 empty
Pin 6 rear wiper..................yet to do
Pin 7 number plate light ....from pin 7 t17c
Pin 8 brake light..................from pin 8 t17c
Pin 9 door contact switch....from pin 9t17c
Pin 10 interior light to illuminate light when door open...from pin 15 t17c
Pin 11 empty
Pin 12 empty
Pin 13 outer door handle switch to open tailgate................. yet to do wire but will go to bcm pin 23
Pin 14 Lock............................................................................yet to wire but will go bcm pin 10
Pin 15 Earth....................Thicker brown Earth to D pillar
Pin 16 HRW.......................yet to do
Pin 17 HRW.......................yet to do

I haven't run the 2 extra wires to the bcm yet, or indeed got into coding yet only had the van 2 weeks and the tailgate about 6 days so very pleased with progress so far as the van is perfectly usable apart from having to open from inside.

 

[HoopDub]

Ahh, in that case it will be like this until you complete the wiring and the coding. The van doesn't like being in between

Don't know if this is visible but heres a sheet i used when doing my one.

 

[Squiz]

Great thank you, I had a message back from Ads who said exactly the same, once its all wired I can start coding and troubleshooting in anger, I am a bit stuck now for time to actually do that, but all your inputs are invaluable and appreciated for when I can. I want it to ultimately behave like it came out of the factory with it fitted !
Cheers !!!

 

[Squiz]

Heres how it looked as I hung it for the first time with the old barn door bumper on !

Ps..great spreadsheet skills HoopDub !

 

[karolust]

hey . i want to change my t5.2 to t6 rear . i have a question do you know how easy it is to connect the opening . in t5.2 there is a cable and in t6 we already have a button

 

[Ads_Essex]

hey . i want to change my t5.2 to t6 rear . i have a question do you know how easy it is to connect the opening . in t5.2 there is a cable and in t6 we already have a button

What do you mean by ‘Connect to the opening’?

 

[karolust]

how to connect handle with button T6 vw T5.2

 

[mmi]

how to connect handle with button T6 vw T5.2

Per wiring diagrams it's actually the same as in T6.
The handle button/switch between BCM T73a/23 and ground. The release motor between BCM T73a/10 and ground. T73a = black connector.
Then just a coding change in the BCM.

T6 - Convenience Systems Wiring Diagram

Wiring diagrams covering vehicle locking system/door releases and front window regulators VIP Membership is required to download this document

www.t6forum.com

LHD version under History tab - version 2016 - No. 2/16 - although this is the same both on RHD and LHD

---

VIP Membership

VIP Membership Information

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[Squiz]

Nearly there still got the lock, hrw and wiper functions to sort out…work has slowed down since working lights and opening from the inside available as the van is usable everyday..will get onto the wiring and coding next !

 

[JumpShip]

Looking good Squiz

 

[Squiz]

Thanks ,

 

[djmeeg]

Hi guys, sorry to revisit this issue but I am absolutely stumped with getting the van to behave properly. But iam really struggling to get not only the tailgate to work correctly.

To recap, I have run the 2 wires all the way from the bcm to the tailgate. One to power the actuator of the tailgate to release the lid. And also 1 wire which when earthed registers the soft close buttton on the t6 tailgate.

I have vcds and have coded the tailgate as per the guide. When I use the vcds to trigger the boot lid release it works correctly and will open the tailgate.

However the big discrepancy I have is when viewing the measuring blocks which shows the state of the tailgates position. Whether it’s open, ajar or closed. Everything seems correct but when all connected and the vcds hooked up to check the measuring blocks. If the tailgate status is closed closed so shut properly. The handle will
Not open the gate. It just does not respond to anything. I also can’t release it through vcds.
The only way I can get the van to appear to function correctly is to attach a jumper wire on the connector which goes to the catch on the tailgate registering the tailgate position status. In the vcds it shows open closed as per attatced image. It will then when the van is unlocked actually open via the handle and vcds command to release the tailgate.

Behaviour I have also experienced is that. If you unlock the van via remote and don’t get to the back alsmost immediately press the soft touch handle button on the tailgate will flash the indicators and and lock the van ??
The other more problematic and annoying issue is. After unplugging the vcds and everything seeming to work. If I drive it somewhere it most of the time then just doesn’t respond to the remote central locking and I have to manual insert the key to turn barrel to unlock the van.
I can get it working again by plugging in thr vcds system. That for some reason seems to activate it again.
My experience of the vcds is fairly limited and I was hoping maybe people more well versed than me with vcds could maybe point out what I can check or change to resolve the weird behaviour and allow me to operate the tailgate whilst receiving the correct status of the tailgate. As I think this is causing my centra locking issues as it thinks the tailgate is open. But it just doesn’t work when status closed closed is show in meeting blocks on vcds. Please any help
Or tests to carry out are more than welcome.

 

[mmi]

Please post a fresh

(1) VCDS Auto-Scan​

(2) BCM adaptation map​

(3) BCM blockmap - when tailgate open (open/open)​

(4) BCM blockmap - when tailgate ajar (open/closed)​

(5) BCM blockmap - when tailgate fully closed (closed/closed)​

If the tailgate status is closed closed so shut properly. The handle will
Not open the gate. It just does not respond to anything.

Just to clarify - the measurement group 008-4 doesn't respond either?

But it just doesn’t work when status closed closed is show in meeting blocks on vcds.

Just to clarify - it works in other door positions?

If you unlock the van via remote and don’t get to the back alsmost immediately press the soft touch handle button on the tailgate will flash the indicators and and lock the van ??

Perhaps you are experiencing that T6 relocks the doors if none were opened within 30 seconds.