Electrical & Instrumentation

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Most liked posts	Author	Posted	Liked	Forum
Anyone know how to diagnose a faulty PCB	TwinTurbo	21 Nov 2025, 21:33	Once this week	Electrical & Instrumentation

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Last post

Completely Dead T25 DG

Last post by Mr Bean « 11 Nov 2021, 23:34
Replies: 6
by Blrsjer » 11 Nov 2021, 22:26

Hello all,

So I’ll start this post with a small story: It’s a cold autumn morning and I go to start my T25 DG, she starts up first time and whilst...

6 Replies

696 Views

Last post by Mr Bean
11 Nov 2021, 23:34
Blower Motor Plug Numbers?

Last post by Robsey « 09 Nov 2021, 15:54
Replies: 6
by xgav8 » 07 Nov 2021, 20:08

Hey all,

Have replaced my blower motor & resistor and putting it all back together. But now I'm at the plug and I'm not sure which wire goes into...

6 Replies

777 Views

Last post by Robsey
09 Nov 2021, 15:54
Electric fuel pump problem

Last post by AngeloEvs « 08 Nov 2021, 22:20
Replies: 13
by Ray » 08 Nov 2021, 17:18

After 10 months still having trouble with my electric petrol pump failing. I have tried checking everything in the elecric system and after 7...

13 Replies

1260 Views

Last post by AngeloEvs
08 Nov 2021, 22:20
Instrument Cluster Swap

Last post by AngeloEvs « 08 Nov 2021, 17:49
Replies: 7
by Oilline » 07 Nov 2021, 15:02

Am I able to fit the instrument cluster from my late ‘85 German market petrol van with rev counter and digital clock to my ‘88 Uk market petrol Doka...

7 Replies

1611 Views

Last post by AngeloEvs
08 Nov 2021, 17:49
Sliding door wiring

Last post by Stesaw « 07 Nov 2021, 19:26
Replies: 4
by adsnape » 07 Nov 2021, 17:02

I have a brown 12v live wire hanging in the forward sliding door post that connects to a light. Does anyone know where the other end connects to? I...

4 Replies

597 Views

Last post by Stesaw
07 Nov 2021, 19:26
Tailgate wiring

Last post by Robsey « 07 Nov 2021, 10:11
Replies: 9
by Rascal » 04 Nov 2021, 12:40

Im in the process of reinstating the central locking on my van and the rear wiring has been cut at some point im assuming when the tailgate was...

9 Replies

899 Views

Last post by Robsey
07 Nov 2021, 10:11
Heater resistors

Last post by WILKS « 07 Nov 2021, 09:10

by WILKS » 07 Nov 2021, 09:10

1.6 JX 1989
I am I the process of carrying out the full heater box overhaul but am unable to purchase the (gold type) resistors BW nil stock .. can...

0 Replies

1556 Views

Last post by WILKS
07 Nov 2021, 09:10
1989 F reg 2.1 Dj syncro with no brake lights?

Last post by spanishfly « 01 Nov 2021, 18:08
Replies: 1
by spanishfly » 31 Oct 2021, 22:17

Struggling with a lack of brake lights.

Bulbs good, fuse good.

I have live at the switches under the master cylinder on the red/yellow all the...

1 Replies

388 Views

Last post by spanishfly
01 Nov 2021, 18:08
Relay 292, a technical study.

Last post by keynsham1 « 01 Nov 2021, 08:08
Replies: 25
by bigbadbob76 » 05 Dec 2017, 09:52
1

2
Lots of folks seem to have issues with relay 292 headlight buzzer...
here's my story. :lol:
If you just want an easy solution read the red bit...
25 Replies

8678 Views

Last post by keynsham1
01 Nov 2021, 08:08
120 amp alternator worthwhile ?

Last post by bigherb « 31 Oct 2021, 15:43
Replies: 12
by MagicWagon » 30 Oct 2021, 16:50

I been recommended this place to upgrade my defunkt alternator for my 2.0l '83 Aircooled devon.
They can fully rebuild it as a 65amp for £110...

12 Replies

1967 Views

Last post by bigherb
31 Oct 2021, 15:43
Alternator kaput ?

Last post by MagicWagon « 29 Oct 2021, 18:21
Replies: 23
by MagicWagon » 27 Oct 2021, 11:05
1

2
Hi. All. Am on hols in Wales and I think my alternator may have had it. Alternator light on dash stays on. Voltage at battery doesn't increase when...
23 Replies

2126 Views

Last post by MagicWagon
29 Oct 2021, 18:21
I’m sure this is easy, but… fitting a new heater switch.

Last post by KenT3 « 29 Oct 2021, 14:50
Replies: 2
by KenT3 » 10 Oct 2021, 18:47

Hi
I’m been the proud owner of Ollie since August 22nd. We’re getting some minor electric work done and the auto electrician has gone off ill poor...

2 Replies

465 Views

Last post by KenT3
29 Oct 2021, 14:50
Van Not turning over question.

Last post by ajsimmo « 29 Oct 2021, 08:50
Replies: 43
by pleasestartnow » 25 Jul 2021, 13:23
1

2

3
Hi all,

Quick question, for the last week dome of the time I go to start the van it doesn't turn over the first time but does the second or third....
43 Replies

6659 Views

Last post by ajsimmo
29 Oct 2021, 08:50
Failed mot on nearside headlight

Last post by Bryce « 28 Oct 2021, 10:11
Replies: 20
by Bryce » 27 Oct 2021, 15:41
1

2
So I have made a bit of a whoopsie, meant to be going away on Friday and didn't realise mot was past due.

Just had it back and it's been failed on...
20 Replies

1560 Views

Last post by Bryce
28 Oct 2021, 10:11
Mystery wire...?

Last post by Aidan « 27 Oct 2021, 08:50
Replies: 9
by spanishfly » 16 Oct 2021, 19:14

Finally finished rebuilding the 2.1 engine in my syncro learned a lot along the way. I started it today and am working through a few electrical...

9 Replies

886 Views

Last post by Aidan
27 Oct 2021, 08:50
Headlight relay upgrade

Last post by Robsey « 24 Oct 2021, 09:57
Replies: 12
by scotttie » 10 Mar 2021, 12:58

I know this topic has been done to death, so I have tried to read as many old posts as I could find on here and the wiki but I still have a couple of...

12 Replies

5485 Views

Last post by Robsey
24 Oct 2021, 09:57
Instrument clusters

Last post by AngeloEvs « 23 Oct 2021, 20:34
Replies: 1
by Gordo89 » 23 Oct 2021, 18:01

I will be putting the van back together shortly and wondered if the instrument cluster can be bench tested prior to fitting.
Mainly to see if the...

1 Replies

448 Views

Last post by AngeloEvs
23 Oct 2021, 20:34
Speedometer problem

Last post by TONYT25T25 « 23 Oct 2021, 17:12
Replies: 27
by TONYT25T25 » 22 Nov 2020, 10:02
1

2
Speedometer playing up again, I have unclipped it from behind the binnacle and put a few drops of 3 in 1 oil down it, but it is still not right,...
27 Replies

5352 Views

Last post by TONYT25T25
23 Oct 2021, 17:12
Temp gauge sits high?

Last post by maxstu « 22 Oct 2021, 20:59
Replies: 9
by Shinnster » 21 Oct 2021, 13:39

Hi,

When i drive my van the temp gauge sits above half, just below 3/4's and wondered if this is normal?
i'm scared to drive long distances at the...

9 Replies

1251 Views

Last post by maxstu
22 Oct 2021, 20:59
Choke wire fire

Last post by MagicWagon « 21 Oct 2021, 10:36
Replies: 8
by MagicWagon » 18 Oct 2021, 19:09

Had a bit of a scare this evening. I was adjusting the automatic chokes on my 83 2.0L air cooled as it was running very fast on choke. I took off the...

8 Replies

1145 Views

Last post by MagicWagon
21 Oct 2021, 10:36
headlight upgrade kit review

Last post by syncroandy « 20 Oct 2021, 10:54
Replies: 3
by RCN » 19 Oct 2021, 19:36

Hello collective hive
Asked a couple of the guys here about these headlight upgrades they did but wondering if anyone else has any view - good or bad...

3 Replies

964 Views

Last post by syncroandy
20 Oct 2021, 10:54
Dash light short out ,smoke filled cab

Last post by innocenti « 18 Oct 2021, 10:16
Replies: 15
by innocenti » 10 Oct 2021, 17:37
1

2
Hi pics attached
Would the failure of the dash variation illumination light cause this ?
Last night dashs light flickered then off totally before...
15 Replies

1676 Views

Last post by innocenti
18 Oct 2021, 10:16
Speedo Needle

Last post by sauce1001 « 17 Oct 2021, 08:56
Replies: 3
by sauce1001 » 16 Oct 2021, 20:15

Hi all, I've just changed my KPH speedo to MPH using a vinyl overlay. This involved removing the needle and the 2 small screws on the face. I've...

3 Replies

449 Views

Last post by sauce1001
17 Oct 2021, 08:56
Bulb for brake warning

Last post by Robsey « 16 Oct 2021, 18:17
Replies: 2
by chrism589 » 16 Oct 2021, 14:37

Hi.

Got a 87 T25. The bulb for the handbrake warning light is missing. I can't find the correct model bulb to use on various forums.
Can anyone...

2 Replies

424 Views

Last post by Robsey
16 Oct 2021, 18:17
Reverse lights no worky ??

Last post by ScienceBoy « 13 Oct 2021, 17:47
Replies: 24
by KINGPRAWN » 17 Mar 2016, 14:27
1

2
Hi all, 2.1 Syncro 87 ... Reverse lights don't work ... And perhaps haven't in years ???
Think I found the switch ( left side of the gearbox on the...
24 Replies

13366 Views

Last post by ScienceBoy
13 Oct 2021, 17:47
new door and rear speakers :D

Last post by fh9977 « 13 Oct 2021, 08:53

by fh9977 » 13 Oct 2021, 08:53

Hi - I replaced my door and rear speakers yesterday, van still had the stock Blaupunkt made in West Germany. I was never a fan of the Blue Dot as a...

0 Replies

1667 Views

Last post by fh9977
13 Oct 2021, 08:53
Dashboard Switch Illumination.

Last post by keynsham1 « 12 Oct 2021, 20:01
Replies: 2
by keynsham1 » 12 Oct 2021, 18:14

I am currently refitting my dash and the instrument console and have noticed that there are some switches that light up with the lights and some...

2 Replies

394 Views

Last post by keynsham1
12 Oct 2021, 20:01
New headlights smoked? Brickwerks

Last post by Jonnyb416 « 12 Oct 2021, 13:13
Replies: 5
by Jonnyb416 » 09 Oct 2021, 18:22

Hi all,

I’m slightly confused as Brickwerks have the H4 headlights available in a set but you can’t order them individually. I’d order the set but...

5 Replies

747 Views

Last post by Jonnyb416
12 Oct 2021, 13:13
Location of 12v Fuse

Last post by JamieQPR « 11 Oct 2021, 16:22
Replies: 13
by otherking » 20 Oct 2016, 18:09

Hey there!
First time posting here..

I've recently bought my first T25 (1989 California) and I believe my 12v fuse might have blown as the inside...

13 Replies

4847 Views

Last post by JamieQPR
11 Oct 2021, 16:22
Reverse lights inop

Last post by Aidan « 11 Oct 2021, 13:18
Replies: 4
by WILKS » 06 Oct 2021, 17:06

1.6 JX 1986 5 speed .. I have an intermittent fault with the reverse lights , fitted a new switch ex BW ,lights are still operating very...

4 Replies

506 Views

Last post by Aidan
11 Oct 2021, 13:18
Rear Fog Light Voltage Mystery

Last post by syncroandy « 05 Oct 2021, 15:26
Replies: 7
by PaulG » 29 Sep 2021, 17:50

Hi all,

1989 RHD genuine UK van

My rear fog light looked dim, so I started investigating. I have discovered that the voltage between the feed wire...

7 Replies

1615 Views

Last post by syncroandy
05 Oct 2021, 15:26
Dash Light Question

Last post by gary1998 « 30 Sep 2021, 22:29
Replies: 4
by Ant-t » 29 Sep 2021, 21:33

The dash light for my temp/fuel guages (on the right) has stopped working, looking closer the metal strip has disintegrated so there no power...

4 Replies

974 Views

Last post by gary1998
30 Sep 2021, 22:29
Blower pwm upgrade

Last post by airheadboxer « 29 Sep 2021, 19:47
Replies: 12
by Lanciaman » 04 Sep 2021, 10:08

I've got my dash out at the mo, so am going to fix the blower motor and like the idea of the pwm upgrade.
But I can't find much about it, and Bw's,...

12 Replies

1937 Views

Last post by airheadboxer
29 Sep 2021, 19:47
How reliable are the fuel tank gauge sender units

Last post by weimarbus « 29 Sep 2021, 17:26
Replies: 4
by weimarbus » 28 Sep 2021, 16:15

Hi, as per post title, I just wondered from those with more experience of tank replacement whether the tank sender units are generally reliable or do...

4 Replies

880 Views

Last post by weimarbus
29 Sep 2021, 17:26
Hooking up a portable solar panel

Last post by sweetaswesty « 28 Sep 2021, 13:01
Replies: 9
by sweetaswesty » 22 Sep 2021, 07:48

I've noticed on some photos and videos that it's possible to run a cable and connection for a portable solar panel into the van through the ac power...

9 Replies

1473 Views

Last post by sweetaswesty
28 Sep 2021, 13:01
New Leisure Wiring - Asking For Your Experience and Advice

Last post by oli8925 « 23 Sep 2021, 17:15
Replies: 6
by oli8925 » 30 Aug 2021, 16:08

Hi everyone,

As per title I'm putting together the plans to wire in a completely new leisure loom. This is my first time wiring up a leisure system,...

6 Replies

1142 Views

Last post by oli8925
23 Sep 2021, 17:15
Inherited a battery isolator, can i wire dash clock to battery?

Last post by grace72 « 18 Sep 2021, 12:21
Replies: 3
by grace72 » 15 Sep 2021, 12:24

The 1.9 DG I have recently bought came with a battery isolator and of course the clock stops when i use it. Is it possible to wire up the clock to...

3 Replies

710 Views

Last post by grace72
18 Sep 2021, 12:21
Instrument cluster - no voltage regulator

Last post by Robsey « 16 Sep 2021, 22:44
Replies: 2
by jospanner » 16 Sep 2021, 12:15

Hi, looks like the voltage regulator has been bypassed on my gauge cluster. Opened it up to test the fuel gauge, cos I'm having weird intermittent...

2 Replies

1371 Views

Last post by Robsey
16 Sep 2021, 22:44
Flashing lights!!

Last post by AngeloEvs « 11 Sep 2021, 21:22
Replies: 7
by Wearside wanderer » 12 Jul 2021, 12:47

so I have developed a couple of new unwanted disco lights on the dashboard, firstly the water Coolant, however I know it’s all topped up etc so I’m...

7 Replies

1628 Views

Last post by AngeloEvs
11 Sep 2021, 21:22
Front indicator seals?

Last post by grace72 « 10 Sep 2021, 07:10
Replies: 5
by grace72 » 09 Sep 2021, 16:35

Even though I’ve owned a T25 since 2003, I don’t remember when I last changed a front indicator bulb. Well I just have and the lense had a fair bit...

5 Replies

677 Views

Last post by grace72
10 Sep 2021, 07:10
EHU Question. Non VW

Last post by Stesaw « 09 Sep 2021, 23:01
Replies: 6
by maxstu » 09 Sep 2021, 20:00

We use an Esterel folding caravan for our camping trips. It has been sitting idle for a year. So l decided to open it up and check a few things...

6 Replies

639 Views

Last post by Stesaw
09 Sep 2021, 23:01
glow plug light

Last post by ZsZ « 07 Sep 2021, 14:01
Replies: 7
by ianvfr750 » 01 Sep 2021, 09:14

I have a 1.6TD camper and the glow plug light normally takes about 45 seconds to go out - is this normal or does it indicate a problem with the...

7 Replies

818 Views

Last post by ZsZ
07 Sep 2021, 14:01
Temp gauge reading high with warning light

Last post by Samanthington « 01 Sep 2021, 11:56
Replies: 10
by rosar » 24 May 2021, 09:24

Dear all,

I have a 1990 2.1 Caravelle conversion which has just had a new engine fitted by the VW engine company. Various other bits replaced as...

10 Replies

2487 Views

Last post by Samanthington
01 Sep 2021, 11:56
VW T25 immobiliser stopped working

Last post by TONYT25T25 « 01 Sep 2021, 08:12
Replies: 3
by Johnredpath1953 » 29 Aug 2021, 19:36

Hello All.
I've got a 1984 T25 that has an immobiliser on/off switch under the dash that was installed over 20 years ago It's not working and but I...

3 Replies

570 Views

Last post by TONYT25T25
01 Sep 2021, 08:12
Unknown wire

Last post by davidoft1 « 31 Aug 2021, 19:47
Replies: 5
by Ragtime.ben » 30 Aug 2021, 17:55

Can anybody tell me what this wire is? Runs round the rear of the engine bay and has an inline fuse. Goes towards the water pump area at the right...

5 Replies

716 Views

Last post by davidoft1
31 Aug 2021, 19:47
Protecting engine bay wires

Last post by CovKid « 30 Aug 2021, 09:30

by CovKid » 30 Aug 2021, 09:30

Quick tip from Covkid on preventing engine bay wires from going brittle. I use the same stuff when restoring valve radios because of its...

0 Replies

2735 Views

Last post by CovKid
30 Aug 2021, 09:30
Dissy Rotor Wear.

Last post by maxstu « 25 Aug 2021, 18:50
Replies: 4
by maxstu » 25 Aug 2021, 07:50

My DJ 2.1 Auto is rapidly using dissy rotors. Or a least they require carbon removal from the metal lip.
Yesterday morning the camper refused to...

4 Replies

642 Views

Last post by maxstu
25 Aug 2021, 18:50
Leisure battery...

Last post by TONYT25T25 « 23 Aug 2021, 16:34
Replies: 1
by JulianBuck » 23 Aug 2021, 15:23

Guys - need your expert help if I may.
'88 VW autosleeper Tident.
Fully charged leisure battery (see pics). Control panel says its fully charged too....

1 Replies

489 Views

Last post by TONYT25T25
23 Aug 2021, 16:34
fridge voltage drop

Last post by nick.k « 17 Aug 2021, 18:33
Replies: 2
by nick.k » 15 Aug 2021, 10:50

12volt element was not working checked voltage and this was low caused by a drop at in line fuse.
Replaced this healthy 13.9 when engine running...

2 Replies

1226 Views

Last post by nick.k
17 Aug 2021, 18:33
Main beam telltale light

Last post by AngeloEvs « 16 Aug 2021, 19:30
Replies: 4
by RazorRiggott » 17 Nov 2019, 21:27

Hi. My T25 has failed it's MOT due to the above. I've removed the instrument binnacle though not the ribbon yet. Are the instrument lights holding it...

4 Replies

1894 Views

Last post by AngeloEvs
16 Aug 2021, 19:30

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