Electrical & Instrumentation

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Most liked posts	Author	Posted	Liked	Forum
Flashing Coolant LED	colinthefox	23 Mar 2025, 20:32	2 times this week	Electrical & Instrumentation
Flashing Coolant LED	silverbullet	23 Mar 2025, 18:09	Once this week	Electrical & Instrumentation

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Last post

Got an electrical fault ? Read this first!

Last post by Hacksawbob « 10 Feb 2013, 23:56

by Hacksawbob » 10 Feb 2013, 23:56

Check your earths !

Many electrical issues are caused by corroded electrical contacts on the earthing points. Please read and check before posting...

0 Replies

16836 Views

Last post by Hacksawbob
10 Feb 2013, 23:56
Speedometer, fuel gauge, temp gauge not working

Last post by FarWare12 « Today, 11:39
Replies: 9
by FarWare12 » 22 Jan 2024, 20:41

Hi. I recently bought a T25 and the speedometer, odometer, fuel gauge and temp gauge are not working. The warning lights do work.

Could this be one...

9 Replies

950 Views

Last post by FarWare12
Today, 11:39
Reading VW wiring diagram

Last post by Robsey « 24 Mar 2025, 20:52
Replies: 10
by MarcoT3 » 22 Mar 2025, 14:14

Hi guys, on the top of the VW wiring diagram there is a line marked 31. In the wiki it says this is ground. Am I right in assuming this is a ground...

10 Replies

887 Views

Last post by Robsey
24 Mar 2025, 20:52
A4 +ve?

Last post by MarcoT3 « 24 Mar 2025, 19:12
Replies: 6
by MarcoT3 » 22 Mar 2025, 21:33

Hi all, does anyone know where the A4 positive in dash wiring loom noted below is in reality in the van? Thanks :D

6 Replies

356 Views

Last post by MarcoT3
24 Mar 2025, 19:12
Flashing Coolant LED

Last post by Smiffo « 23 Mar 2025, 20:37
Replies: 6
by Smiffo » 23 Mar 2025, 15:05

Afternoon all.

Scanned the pages already for ’the' good diagram ( there used to be a good one on Wiki, but that seems empty now. )

Problem as...

6 Replies

261 Views

Last post by Smiffo
23 Mar 2025, 20:37
Temp gauge issue

Last post by TwinTurbo « 22 Mar 2025, 17:39
Replies: 6
by Africatwin » 21 Mar 2025, 18:54

Sorry admin. Originally posted in “mechanical” but it’s moved on to an electrical I think.

This is the original post

Evening all.

Newly acquired...

6 Replies

467 Views

Last post by TwinTurbo
22 Mar 2025, 17:39
No Main Beam - no Blue LED

Last post by MarcoT3 « 22 Mar 2025, 14:19
Replies: 2
by trentjim » 21 Mar 2025, 14:21

noticed last night that i had a problem with the lights...
ive not really investigated yet but first impression is that dip is working but main beam...

2 Replies

254 Views

Last post by MarcoT3
22 Mar 2025, 14:19
Buzzing, but not in a good way.

Last post by AlBundy « 20 Mar 2025, 16:44
Replies: 14
by AlBundy » 19 Mar 2025, 13:51

1.6 Diesel 1986 Bilbo Conversion.

I haven't been able to start the engine, and have narrowed the issue down to the box at the back left of the...

14 Replies

1690 Views

Last post by AlBundy
20 Mar 2025, 16:44
Headlamps improvements

Last post by Alfredo « 18 Mar 2025, 18:32
Replies: 35
by Simon Baxter » 14 Feb 2025, 15:24
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2

3
How do.
A customer recently asked us is we had any headlamp relays kits to which the answer was no, too many variables for us but we do have all the...
35 Replies

9649 Views

Last post by Alfredo
18 Mar 2025, 18:32
Early van / electrics, intermittent wiper relay?

Last post by Jay Goll « 15 Mar 2025, 23:13
Replies: 13
by bmouthboyo » 01 Aug 2018, 19:20

Hi Guys,

I have an early 83 van, originally a DG which has the old electrics with ceramic fuses etc.

Is it possible to easily upgrade the wipers so...

13 Replies

3959 Views

Last post by Jay Goll
15 Mar 2025, 23:13
Decent New battery

Last post by Oldiebut goodie « 13 Mar 2025, 14:40
Replies: 5
by Jay Goll » 05 Mar 2025, 14:37

Hi there,

does anyone have some good recommendations for a new main battery for T25 2.0 cu Aircooled.
I saw an old post back in 2018 for a bosch 065...

5 Replies

1822 Views

Last post by Oldiebut goodie
13 Mar 2025, 14:40
Stereo adapter

Last post by Robsey « 10 Mar 2025, 19:31
Replies: 7
by AlBundy » 29 Nov 2024, 17:08

The car stereo was running the battery down, so I took it out. So far so good, but I would like to replace it with something newer, and obviously the...

7 Replies

5048 Views

Last post by Robsey
10 Mar 2025, 19:31
No front indicator LH side

Last post by Rik « 07 Mar 2025, 18:08
Replies: 3
by jacko1967 » 06 Mar 2025, 14:23

Hi my front L H side indicator has stopped working I've checked the bulb and it's fine all the others work. the relay clicks fast as if the bulb is...

3 Replies

1288 Views

Last post by Rik
07 Mar 2025, 18:08
Replacing blower fan without removing heater box

Last post by SyncroMatt « 04 Mar 2025, 18:24
Replies: 10
by SyncroMatt » 04 Mar 2025, 13:49

Is it possible/ Sensible?

I’m not inclined to remove the whole heater box at present and disconnect the heater matrix.

Is it feasible to open the...

10 Replies

1781 Views

Last post by SyncroMatt
04 Mar 2025, 18:24
Clock, Door Interior Light, Stereo/CD Player Fault

Last post by ZsZ « 04 Mar 2025, 05:33
Replies: 26
by maxstu » 06 Jan 2025, 21:23
1

2
Boy, did we have a deluge of stormy weather and rain here in Margate. Carried on from Saturday afternoon and all through Sunday until the wee hours,...
26 Replies

8322 Views

Last post by ZsZ
04 Mar 2025, 05:33
Carb Relay DG1.9

Last post by maxstu « 03 Mar 2025, 10:56
Replies: 7
by maxstu » 28 Feb 2025, 20:32

The 40 amp relay number 1 in black box in engine bay has failed. It does not click when 12v is put on 87 and 30. Opened it up and can't find anything...

7 Replies

2334 Views

Last post by maxstu
03 Mar 2025, 10:56
Intermittent starter motor

Last post by Burtybassett « 19 Feb 2025, 18:41
Replies: 4
by Welshclimber » 17 Feb 2025, 13:13

Hi all, I’m still having some issues with the starter motor clicking occasionally and not starting. I’ve replaced the spade connector, but noticed...

4 Replies

1928 Views

Last post by Burtybassett
19 Feb 2025, 18:41
RGB led bulbs in cluster/dash

Last post by Italjohn « 05 Feb 2025, 13:08
Replies: 2
by Italjohn » 24 Jan 2025, 13:41

Hi guys.
Here is my new RGB led upgraded cluster/dash.
Controlled by and APP or a redio remote.
It is also music controlled, so it can act as a disco...

2 Replies

2137 Views

Last post by Italjohn
05 Feb 2025, 13:08
1.9 DG distributor won't come off

Last post by Oldiebut goodie « 05 Feb 2025, 09:18
Replies: 4
by Swordfish93 » 04 Feb 2025, 16:41

I am trying to remove my distributor off my 83 1.9dg but it won't come loose. I have removed both nuts for the clamp and made sure the engine is TDC...

4 Replies

2332 Views

Last post by Oldiebut goodie
05 Feb 2025, 09:18
distributor help

Last post by Che « 01 Feb 2025, 19:50
Replies: 9
by Che » 31 Jan 2025, 17:13

I think my distributor is causing starting issues on my 1.9DG.

When looking at it today, I noticed that the vacuum unit on the
dizzy is taped up!...

9 Replies

3378 Views

Last post by Che
01 Feb 2025, 19:50
Coil

Last post by MarkHughes « 29 Jan 2025, 17:05
Replies: 5
by Freddievan » 27 Jan 2025, 14:17

I've had intermittent issues with ignition, which was traced to the coil connections. The connectors have been cleaned and tightened but the issue...

5 Replies

2673 Views

Last post by MarkHughes
29 Jan 2025, 17:05
Interior light - galley

Last post by Freddievan « 27 Jan 2025, 19:09
Replies: 2
by Freddievan » 27 Jan 2025, 13:19

Hi

Shortly after I bought my van, around 11 years ago, my galley light (over the cooker) died. I replaced it with something that looked like the...

2 Replies

1902 Views

Last post by Freddievan
27 Jan 2025, 19:09
RM212 Fridge - Electric Ignition not working

Last post by Alexlib « 25 Jan 2025, 18:26
Replies: 10
by kimmypw » 23 Jun 2020, 11:55

Hello, i have started experiencing issues with my RM212 3 way fridge.

The fridge is working fine on the mains, however the electric igniter switch...

10 Replies

5886 Views

Last post by Alexlib
25 Jan 2025, 18:26
Engine doesnt stop when ignition ‘off’

Last post by Barybus « 21 Jan 2025, 22:23
Replies: 66
by 100leelee » 16 Jun 2019, 19:27
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2

3

4

5
Hi
Two questions in one really, well a statement then a question..
1.9dg 1986 lpg conversion

So, after having the dash out, I tidied up the po mess...
66 Replies

26302 Views

Last post by Barybus
21 Jan 2025, 22:23
Sink water pump problem

Last post by dcworm57 « 21 Jan 2025, 14:51
Replies: 8
by Profscooter » 16 Sep 2017, 11:17

Hi all, first post here, I have recently acquired my first VW camper, a 1986 Auto-Sleeper high top T25, yes I know, only 31 years late to the party....

8 Replies

5418 Views

Last post by dcworm57
21 Jan 2025, 14:51
Internal Charger for Leisure Battery

Last post by Oren Kipnis « 16 Jan 2025, 14:37
Replies: 7
by keynsham1 » 14 Jan 2025, 19:42

Currently I have no charger in by van for charging the leisure battery when using the EHU. I had a fancy CTek one but it failed and the replacement...

7 Replies

4039 Views

Last post by Oren Kipnis
16 Jan 2025, 14:37
Light switch light

Last post by Rik « 01 Jan 2025, 14:24
Replies: 18
by clone123 » 03 Dec 2020, 14:16
1

2
Hi just sorting all my lights on my dash my question is should the headlight switch have a light in it as I have no bulb holder or extra wires to go...
18 Replies

7959 Views

Last post by Rik
01 Jan 2025, 14:24
Wiring caught fire

Last post by Robsey « 29 Dec 2024, 20:18
Replies: 19
by Camfrank99 » 05 Jun 2021, 18:39
1

2
Hi guys I was recently passed down my dads t25 after he passed and he was still messing with it before he left, so today I got a new battery for it...
19 Replies

5842 Views

Last post by Robsey
29 Dec 2024, 20:18
Cu 2.0 Alternator adaptation

Last post by Burtybassett « 27 Dec 2024, 11:08
Replies: 4
by Heaver » 23 Dec 2024, 18:58

Hi all,
Managed to snap a bolt on my 45amp alternator, and believe new replacements are impossible to find (ones that are any good).

Has anyone...

4 Replies

2520 Views

Last post by Burtybassett
27 Dec 2024, 11:08
T 25 starter battery

Last post by Mocki « 14 Dec 2024, 16:04
Replies: 2
by pan-al » 14 Dec 2024, 10:46

Hi could anyone advise me on a suitable starter battery AH I would need for my 1900 dg engine.thanks .

2 Replies

2075 Views

Last post by Mocki
14 Dec 2024, 16:04
Courtesy light extender

Last post by Stesaw « 10 Dec 2024, 18:34
Replies: 16
by 123-jn » 01 Jan 2015, 18:42
1

2
I have just built a little circuit which works a treat. It allows the courtesy light to stay on and dim over about 10 seconds after the door closes....
16 Replies

16711 Views

Last post by Stesaw
10 Dec 2024, 18:34
Faulty fuel gauge and rev counter

Last post by Oldiebut goodie « 10 Dec 2024, 15:36
Replies: 9
by PasQuYto » 30 Nov 2024, 21:40

Hello, i have recently bought myself a 1990 T3 1.6TD with a faulty rev counter and fuel gauge.
I am wondering what are the first things to check, i...

9 Replies

4357 Views

Last post by Oldiebut goodie
10 Dec 2024, 15:36
After Market Head Unit

Last post by Che « 01 Dec 2024, 20:50
Replies: 18
by Che » 24 Nov 2024, 11:26
1

2
Hi all,

Thinking of removing the stereo and fitting a head unit which has a touch screen and android auto capabilities.

Seen some on Amazon which...
18 Replies

8602 Views

Last post by Che
01 Dec 2024, 20:50
Hazard lights blow fuses

Last post by R0B « 30 Nov 2024, 20:56
Replies: 3
by Mickybradshaw » 30 Nov 2024, 15:47

Hi all - I've reached head scratching time; 1983 1.6d van, indicators all work but no hazards - checked the fuse which had blown but when I replace...

3 Replies

2337 Views

Last post by R0B
30 Nov 2024, 20:56
Engine running 12.5 volts = alternator not working?

Last post by keynsham1 « 29 Nov 2024, 10:47
Replies: 4
by AlBundy » 12 Oct 2024, 09:35

As per subject, the battery performance was poor, running down a lot more regularly than it should, and last week didn't start at all.

Removed...

4 Replies

2810 Views

Last post by keynsham1
29 Nov 2024, 10:47
Running Cibie spotlights off leisure battery.

Last post by Stesaw « 27 Nov 2024, 18:06
Replies: 2
by Quzzy » 27 Nov 2024, 15:10

Ive got some dipping Cibies that I will run off relays linked to the original wiring for switching. However rather than run a large live all the way...

2 Replies

2605 Views

Last post by Stesaw
27 Nov 2024, 18:06
Faulty bosch 0261200284 / vw 025906022d digifant i df1

Last post by davidoft1 « 20 Nov 2024, 13:12
Replies: 22
by crankythecamper » 24 Jul 2021, 17:03
1

2
Hi All,

First time posting so hopefully I am doing this right!

I was just wondering if you could help me, I have a faulty ecu on my VW T25...
22 Replies

8496 Views

Last post by davidoft1
20 Nov 2024, 13:12
Wouldn't start - Happy ending, some lessons learnt!

Last post by Piratepete « 11 Nov 2024, 23:16

by Piratepete » 11 Nov 2024, 23:16

Hi Guys. Had a good summer in Cybil with no problems at all (apart from wife locking us out once :D ). Always instant start.
Home on 26th Oct. Two...

0 Replies

2417 Views

Last post by Piratepete
11 Nov 2024, 23:16
Dash Foil/PCB Options

Last post by TwinTurbo « 07 Nov 2024, 21:50
Replies: 32
by chrisevans » 07 Oct 2024, 10:52
1

2

3
I have a late Diesel Engine Dash with Tacho. I managed to damage(cut) the track in a couple of places when replacing the regulator, trying to get the...
32 Replies

10239 Views

Last post by TwinTurbo
07 Nov 2024, 21:50
axiliary water pump staying on

Last post by Oren Kipnis « 29 Oct 2024, 20:18
Replies: 3
by morganite » 29 Oct 2024, 17:18

Hi, 1.6 td, my axiliary water pump is staying on and running the battery down, is there a relay somewhere that should shut the water pump down once...

3 Replies

2289 Views

Last post by Oren Kipnis
29 Oct 2024, 20:18
axiliary water pump staying on

Last post by morganite « 29 Oct 2024, 17:18

by morganite » 29 Oct 2024, 17:18

Hi, 1.6 td, my axiliary water pump is staying on and running the battery down, is there a relay somewhere that should shut the water pump down once...

0 Replies

3034 Views

Last post by morganite
29 Oct 2024, 17:18
Switch wiring routing

Last post by chrisevans « 28 Oct 2024, 20:37

by chrisevans » 28 Oct 2024, 20:37

Couple more questions . What is the order for the right hand switches? The wires seem a little tight in which ever way I fit the blinker switch and...

0 Replies

2683 Views

Last post by chrisevans
28 Oct 2024, 20:37
Swedish Syncro Doka - Fogs and Washer Pump

Last post by chrisevans « 24 Oct 2024, 15:07
Replies: 7
by chrisevans » 21 Oct 2024, 21:00

My Syncro Doka was from the frozen North(Sweden) so came with Day time running lights and washer pump for the head lights. There is a separate wiring...

7 Replies

3667 Views

Last post by chrisevans
24 Oct 2024, 15:07
A bad alternator?

Last post by TwinTurbo « 23 Oct 2024, 06:26
Replies: 3
by willmagrath » 22 Oct 2024, 19:51

Hi all,

Van was fine, drove it 30 miles no issues and then has repeatedly started well whilst sat and we've been working on it.

We then left it...

3 Replies

3024 Views

Last post by TwinTurbo
23 Oct 2024, 06:26
Wipers and Horn not working

Last post by Rik « 14 Oct 2024, 06:04
Replies: 7
by willmagrath » 01 Oct 2024, 08:47

Hi all,

New T25 and VW owner here. On friday I picked up a high top T25 in need of some work. Needs an MOT but the wipers and horn dont work....

7 Replies

3086 Views

Last post by Rik
14 Oct 2024, 06:04
Charging/Alternator light on at 55mph!

Last post by TwinTurbo « 12 Oct 2024, 13:14
Replies: 8
by Che » 10 Oct 2024, 17:26

Hey,
So we have a Devon Eurovette (MY 85, registered 87) 1.9 DG with a four speed box.

So, while driving at 55mph and upwards, the...

8 Replies

3130 Views

Last post by TwinTurbo
12 Oct 2024, 13:14
How to replace rubber boots behind rear light cluster

Last post by bessiebelle « 11 Oct 2024, 11:21
Replies: 2
by bessiebelle » 09 Oct 2024, 17:54

I'm trying to replace the rubber boots behind the rear light cluster

I can't figure out how to detach the connector from the light so I can slip the...

2 Replies

2191 Views

Last post by bessiebelle
11 Oct 2024, 11:21
No Off Side Indicators On Hazard Switch.

Last post by maxstu « 10 Oct 2024, 21:25
Replies: 12
by maxstu » 07 Oct 2024, 16:42

Prepping camper No2 DG1.9 1987 for pending MOT.
All sound apart from hazard warning switch on dash triggers near side indicators only and not both...

12 Replies

5030 Views

Last post by maxstu
10 Oct 2024, 21:25
Save me from useless t***s!

Last post by silverbullet « 10 Oct 2024, 15:01
Replies: 10
by Oldiebut goodie » 26 Sep 2024, 20:27

And they wonder why it doesn't work correctly.

10 Replies

4858 Views

Last post by silverbullet
10 Oct 2024, 15:01

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