Electrical & Instrumentation

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Most liked posts	Author	Posted	Liked	Forum
What does this wire do and where does it belong?	SyncroMatt	Yesterday, 19:31	Once this week	Electrical & Instrumentation
Engine bay junction box fixings	silverbullet	Yesterday, 16:58	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

20840 Views

Last post by Hacksawbob
10 Feb 2013, 23:56
Engine bay junction box fixings

Last post by Aidan « Today, 03:50
Replies: 6
by silverbullet » 26 Apr 2025, 13:44

What size/type fixings should secure it to the body? I have three holes just under 5mm diameter, tried what looks like the correct size self tapper...

6 Replies

931 Views

Last post by Aidan
Today, 03:50
What does this wire do and where does it belong?

Last post by Robsey « Yesterday, 20:35
Replies: 8
by SyncroMatt » 25 Apr 2025, 21:50

Evening help please!

I was looking for a permanent live for my radio and moved the fuse box for access.

I spotted this black wire circled in red,...

8 Replies

927 Views

Last post by Robsey
Yesterday, 20:35
ZIG unit, no 12v on battery.

Last post by TwinTurbo « Yesterday, 19:44
Replies: 5
by TwinTurbo » 19 Apr 2025, 16:19

Bit of an odd one with my ZIG CF8

On mains the 12v's work, but with the mains disconnected no 12V works. It was fine in octover. I have 12V at the...

5 Replies

529 Views

Last post by TwinTurbo
Yesterday, 19:44
Odd Part on Engine Bay Relay

Last post by Robsey « 26 Apr 2025, 20:30
Replies: 3
by Robsey » 26 Apr 2025, 15:25

Hi All,

I have been going through one of my old van donor looms that I have had for ages.

Possibly from a now defunkt seller Water Wagons.
Not 100%...

3 Replies

468 Views

Last post by Robsey
26 Apr 2025, 20:30
Leisure battery advice

Last post by R0B « 26 Apr 2025, 09:14
Replies: 20
by Shinnster » 09 Apr 2025, 17:22
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2
Hi all,

the time has come to get a leisure battery in my van. Ive been using a second car starter battery for the past 2 years which has kind of...
20 Replies

2207 Views

Last post by R0B
26 Apr 2025, 09:14
Eberspacher heater using old controls westfalia new heater

Last post by PoloG40 « 23 Apr 2025, 15:46
Replies: 14
by clobber » 03 Sep 2016, 13:08

Hi everyone, i have a 87 Joker, im looking into buying a new ebersacher heater, the original was removed but i still have all the controls in the...

14 Replies

10993 Views

Last post by PoloG40
23 Apr 2025, 15:46
Engine bay wiring dilema

Last post by Dueller « 21 Apr 2025, 06:04
Replies: 31
by Dueller » 07 Apr 2025, 20:33
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Been busy with my van conversion, gearbox and engine, see my other threads

Now at the stage where i am connecting up

Have some questions though...
31 Replies

2355 Views

Last post by Dueller
21 Apr 2025, 06:04
VDO cruise control

Last post by MarcoT3 « 18 Apr 2025, 15:50
Replies: 2
by MarcoT3 » 16 Apr 2025, 16:31

Hi,

Does anyone else have the VDO tempostat cruise control? It looks like a factory installation on my van.

Thanks

2 Replies

492 Views

Last post by MarcoT3
18 Apr 2025, 15:50
Starting Issues electrical fault

Last post by Willsk « 11 Apr 2025, 16:49
Replies: 4
by Willsk » 04 Apr 2025, 11:44

Hi

I’m based in Leicester and am having issues starting my van (1981 1.6 diesel westfalia)
I’m really struggling to find the route cause of this...

4 Replies

964 Views

Last post by Willsk
11 Apr 2025, 16:49
Sink Tap T25 1990

Last post by maxstu « 10 Apr 2025, 18:45
Replies: 2
by msvs » 07 Apr 2025, 13:10

Hi there first post so be kind please ! We have a 1990 T25 California, LHD import. Had it for 8 years and the sink tap has never worked. Finally got...

2 Replies

562 Views

Last post by maxstu
10 Apr 2025, 18:45
Android head unit constantly on

Last post by Alfredo « 08 Apr 2025, 08:21
Replies: 12
by Alfredo » 07 Apr 2025, 16:14

I have spoken about this issue over on the what have you done to your van today thread but I thought it would be better to start a new thread.

I...

12 Replies

1096 Views

Last post by Alfredo
08 Apr 2025, 08:21
Flashing Coolant LED

Last post by Smiffo « 05 Apr 2025, 16:22
Replies: 33
by Smiffo » 23 Mar 2025, 15:05
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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...
33 Replies

3423 Views

Last post by Smiffo
05 Apr 2025, 16:22
starter motor issues

Last post by Robsey « 01 Apr 2025, 22:29
Replies: 7
by Plasticman » 01 Apr 2025, 20:21

I have a G reg Auto homes (petrol) with a starter issue,

Turn the key all lights come on as they should but starter doesnt engage, I can hear a...

7 Replies

1455 Views

Last post by Robsey
01 Apr 2025, 22:29
Only running on 2 pots

Last post by Robsey « 01 Apr 2025, 22:18
Replies: 3
by Plasticman » 01 Apr 2025, 20:38

The other problem with the G reg petrol van is running....

Starts great (with jump switch to solenoid) but only runs on two pots, the front pairs...

3 Replies

813 Views

Last post by Robsey
01 Apr 2025, 22:18
Speedometer, fuel gauge, temp gauge not working

Last post by FarWare12 « 28 Mar 2025, 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

2094 Views

Last post by FarWare12
28 Mar 2025, 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

5247 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

2370 Views

Last post by MarcoT3
24 Mar 2025, 19:12
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

4718 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

2618 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

10409 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
1

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

22462 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

9284 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

6524 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

10741 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

5776 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

7138 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

17631 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

7486 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

7063 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

6530 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

7070 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

8938 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

7518 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

6211 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

11415 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
1

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

47381 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

10448 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

9156 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

15484 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

13540 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

7238 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

6364 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

24106 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

10054 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

17304 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

6872 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

7440 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

7032 Views

Last post by Stesaw
27 Nov 2024, 18:06

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