Electrical & Instrumentation

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Most liked posts	Author	Posted	Liked	Forum
What's this wire	ZsZ	07 Oct 2025, 06:00	Once this week	Electrical & Instrumentation

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Last post

Wiring diagram for adding a wiper relay on early type 25

Last post by callyspoy « 09 Feb 2024, 17:08
Replies: 8
by Bessaboy1949 » 07 Sep 2022, 14:28

Does anyone have the wiring diagram for adding the intermittent wiper relay to an early van, i have wired mine up and it all works apart from the...

8 Replies

2519 Views

Last post by callyspoy
09 Feb 2024, 17:08
Intermittent Wiper early fuse

Last post by callyspoy « 05 Feb 2024, 16:32
Replies: 2
by callyspoy » 05 Feb 2024, 16:13

Hi Folks,
Whilst getting power steering fitted to my '83 Van, i took it upon myself to remove the white plug for the intermittent wiper function on...

2 Replies

1240 Views

Last post by callyspoy
05 Feb 2024, 16:32
Annoying fuel guage fault

Last post by PetenAli « 04 Feb 2024, 21:56
Replies: 2
by PetenAli » 04 Feb 2024, 20:19

Just got back from a trip up to the frozen northern wastes (well, North Pennines actually) and after I went out to fill up, the gauge read as above...

2 Replies

1399 Views

Last post by PetenAli
04 Feb 2024, 21:56
Temp gauge gone from working to working differently (Or not)

Last post by Aidan « 04 Feb 2024, 21:08
Replies: 10
by Middle29 » 29 Jan 2024, 12:57

Previously temp gauge seemed to work perfectly, came up to halfway where the red warning light is consistently.

I had some work done on a blowing...

10 Replies

1818 Views

Last post by Aidan
04 Feb 2024, 21:08
Fuse Board Buzzing

Last post by Doyle « 02 Feb 2024, 17:46
Replies: 11
by Doyle » 26 Dec 2023, 11:05

Hi All,
Hope your well, I’m Luke and we have recently bought a VW 1988 T25, Carvella with a 1.9 Subaru engine.

A couple of questions,
When we are...

11 Replies

3396 Views

Last post by Doyle
02 Feb 2024, 17:46
Cruise control instalation and alternative parts.

Last post by Rascal « 31 Jan 2024, 12:44
Replies: 191
by Rascal » 01 Dec 2020, 15:44
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Is this the cruise control relay two wires go to the vss (vehicle speed sensor I think) on the speedo. And the other go to a 2 pin connector that...
191 Replies

47247 Views

Last post by Rascal
31 Jan 2024, 12:44
flickering battery light / replace regulator?

Last post by jrt « 29 Jan 2024, 12:53
Replies: 15
by Middle29 » 22 Nov 2023, 09:31
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Just had some work done, new manifold gaskets etc. Also couple of pulleys replaced and new belts etc. I now have a flickering battery light....
15 Replies

15713 Views

Last post by jrt
29 Jan 2024, 12:53
Water temperature gauge and sensor advise.

Last post by Raido « 28 Jan 2024, 08:56
Replies: 2
by Raido » 27 Jan 2024, 15:58

Hi, I have recently purchased a 1987 1.9 Petrol T3. Unfortunately the water temperature gauge doesn’t work and have removed the plug from the sensor,...

2 Replies

1204 Views

Last post by Raido
28 Jan 2024, 08:56
Resistor search. NON VW

Last post by tobydog « 27 Jan 2024, 20:13
Replies: 4
by maxstu » 27 Jan 2024, 06:33

Looking for a replacement four band resistor. Brown/black/yellow/gold is 100K ohms. But how do l determine wattage? I've seen this four band resistor...

4 Replies

1327 Views

Last post by tobydog
27 Jan 2024, 20:13
CE1 Fuse box - Map of G Pins.

Last post by Robsey « 24 Jan 2024, 22:48
Replies: 60
by Robsey » 20 Mar 2021, 11:03
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Hi all,

As part of my conversion from early fuse box to the later CE1 fuse box, I mapped out every single pin in the fusebox.

I found that...
60 Replies

172526 Views

Last post by Robsey
24 Jan 2024, 22:48
Ignition control / amplifier module and wiring?

Last post by R0B « 18 Jan 2024, 17:51
Replies: 2
by MatteT25 » 18 Jan 2024, 17:01

Good afternoon everyone,

I’ve just signed up as I’ve recently acquired my first T25 project and have come to a bit of a stop and would love some...

2 Replies

1315 Views

Last post by R0B
18 Jan 2024, 17:51
Earth straps on a splity

Last post by Porkscratching « 09 Jan 2024, 21:46
Replies: 5
by Porkscratching » 09 Jan 2024, 16:07

Hi folks, my mate on the IoM has a 1954 6volt split screen that can be reluctant to fire up.
He knows the electrics and fuel are in order but even...

5 Replies

2979 Views

Last post by Porkscratching
09 Jan 2024, 21:46
main beam issue

Last post by lexussoarer1996 « 07 Jan 2024, 21:43
Replies: 14
by lexussoarer1996 » 06 Jan 2024, 14:03

Hi , the vehicle is a South African 2.5i with square headlights , i have just discovered the inner high beams do not work , the outer high and all...

14 Replies

15252 Views

Last post by lexussoarer1996
07 Jan 2024, 21:43
Lithium Leisure Battery

Last post by Cecil « 02 Jan 2024, 14:53
Replies: 13
by rollercoaster » 30 Dec 2023, 20:35

As I have two underseat leisure batteries, both dead,
and its the second time I have killed them..
My guess is its lack of use, with a slow drain.

I...

13 Replies

6388 Views

Last post by Cecil
02 Jan 2024, 14:53
Replacing the Westfalia ‘BBB’ charger

Last post by Nelpy « 27 Dec 2023, 15:20
Replies: 4
by clift_d » 12 Aug 2023, 09:50

Has anybody got any suggestions for suitable products that we can look at to replace the Westy BBB (buzzing black box) in our van? The original seems...

4 Replies

13350 Views

Last post by Nelpy
27 Dec 2023, 15:20
Ignition not working when installed

Last post by AlBundy « 23 Dec 2023, 23:21
Replies: 9
by AlBundy » 25 Nov 2023, 15:04

Bit of an odd one for me. When everything is put together, turning the key doesn't start the engine, when I take it apart, it starts ok. I replaced...

9 Replies

11760 Views

Last post by AlBundy
23 Dec 2023, 23:21
No output from Alternator to rev counter

Last post by cobblers « 18 Dec 2023, 12:32
Replies: 4
by Haro1972 » 17 Dec 2023, 20:28

Been struggling with this one for a while .Had the alternator re-conditioned before we went off on holiday hooked it up no output to the rev counter...

4 Replies

2151 Views

Last post by cobblers
18 Dec 2023, 12:32
No power from Alternator to Leisure batteries.

Last post by slowcoach « 16 Dec 2023, 09:27
Replies: 13
by Porkscratching » 11 Dec 2023, 14:46

This is really effecting my ability to fire up the Erber. The alternator is giving a healthy output but it's not reaching the leisure batteries which...

13 Replies

11833 Views

Last post by slowcoach
16 Dec 2023, 09:27
Westy Split Charge/240V charger Question

Last post by clift_d « 14 Dec 2023, 19:56
Replies: 11
by si macc » 20 Apr 2018, 08:20

Hi all,

I've replaced my faulty BBB with Irish Dave's 3 stage charger mod and I know the wiring for this is working properly as I've tested with a...

11 Replies

9406 Views

Last post by clift_d
14 Dec 2023, 19:56
Ignition wiring

Last post by R0B « 13 Dec 2023, 18:19
Replies: 1
by kentishvanman » 13 Dec 2023, 17:55

Just received a new tracker unit which is going over the cab in the off side of the high top. Have 3 wires to connect. Live and Negative, they are...

1 Replies

2630 Views

Last post by R0B
13 Dec 2023, 18:19
Red light when headlights on

Last post by AngeloEvs « 07 Dec 2023, 22:16
Replies: 3
by Stevieboy217 » 06 Dec 2023, 19:24

Hello, I have an 1987 diesel T25 with an aaz lump in it.
I have recently started to have an issue where the red flashing coolant light comes on if...

3 Replies

9522 Views

Last post by AngeloEvs
07 Dec 2023, 22:16
Km to mph speedo conversion

Last post by Simon Baxter « 05 Dec 2023, 15:48
Replies: 15
by AngeloEvs » 01 Apr 2019, 17:01
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I have a km per hour speedo with trip odometer, I have calibrated for mph and fitted a spare mph facial but the mileage increment's in km covered not...
15 Replies

15963 Views

Last post by Simon Baxter
05 Dec 2023, 15:48
Starter Batteries

Last post by ZsZ « 05 Dec 2023, 11:15
Replies: 4
by Michael4 » 04 Dec 2023, 16:58

Is Alpha Batteries still the go to business for starter batteries that fit under the drivers seat (1.9DG...175mm high?) or is there a new flavour of...

4 Replies

5729 Views

Last post by ZsZ
05 Dec 2023, 11:15
Interior electrics

Last post by keynsham1 « 29 Nov 2023, 22:21
Replies: 3
by Welshclimber » 18 Nov 2023, 19:02

Hi all,

Just looking for some help with the interior electrics. Ours has been messed about with over the years so nothing like the original so I’m...

3 Replies

8477 Views

Last post by keynsham1
29 Nov 2023, 22:21
Local Guru Needed

Last post by Mocki « 19 Nov 2023, 16:11
Replies: 1
by Rubbersoul71 » 19 Nov 2023, 14:07

I'm new to T25s and my first bus, an 89 1.6td has clearly had the cowboys in.

Can anyone local to Sheffield spare a few hours on a Saturday or...

1 Replies

7432 Views

Last post by Mocki
19 Nov 2023, 16:11
Brake reservoir missing something

Last post by R0B « 19 Nov 2023, 15:33
Replies: 2
by Rubbersoul71 » 19 Nov 2023, 13:51

Can anyone please advise what missing from the top of the brake fluid reservoir?

It's clearly lacking something and brake fluid has definitely been...

2 Replies

7146 Views

Last post by R0B
19 Nov 2023, 15:33
T25 1.9 dg no dash power

Last post by mike2drummond « 17 Nov 2023, 09:33
Replies: 4
by mike2drummond » 14 Nov 2023, 14:54

I have an electrical problem where there is no power to the instrument cluster on my 1.9 dg t25.

There is no power coming in on pin 8 of the 14 pin...

4 Replies

7520 Views

Last post by mike2drummond
17 Nov 2023, 09:33
Coil renewal

Last post by R0B « 12 Nov 2023, 22:37
Replies: 1
by kentishvanman » 12 Nov 2023, 22:04

Does the performance of a coil reduce over the years?
Mine is the original one 1987 and I wondered if it should be retired?

1 Replies

6916 Views

Last post by R0B
12 Nov 2023, 22:37
Flashing LED batten lights

Last post by KOTSY « 11 Nov 2023, 16:43
Replies: 2
by KOTSY » 08 Nov 2023, 07:38

Hi everyone. Fitted new batten led lights in my pit about 18 months ago.now when they have been on about 15 mins. They start to flash on and off.it...

2 Replies

7297 Views

Last post by KOTSY
11 Nov 2023, 16:43
Oil pressure switch

Last post by sump « 11 Nov 2023, 13:18
Replies: 19
by sump » 07 Nov 2023, 19:34
1

2
Hi all,

Driving home tonight and the oil light came on :oops: Alarm bells rang out loud. Pulled over asap pulled lid off, all dry no leaks, water...
19 Replies

15796 Views

Last post by sump
11 Nov 2023, 13:18
Interior lights delay relay

Last post by ZsZ « 08 Nov 2023, 20:01
Replies: 11
by cjaysx » 22 Oct 2023, 16:34

Hi all,

Wondering if anyone has a wiring diagram for the interior light dimmer relay (looks like these were pretty rare on the later models)?...

11 Replies

13057 Views

Last post by ZsZ
08 Nov 2023, 20:01
Wiring to Rear Lights

Last post by Magic01 « 07 Nov 2023, 22:32
Replies: 10
by Magic01 » 06 Nov 2023, 19:48

Hi all

Still new to this T25 ownersgip and only my 3rd post

I'm in the process of getting my van ready for MOT and trying to fix a number of...

10 Replies

9756 Views

Last post by Magic01
07 Nov 2023, 22:32
Tap operation on 1980 Westphalia Joker

Last post by davidoft1 « 04 Nov 2023, 11:55
Replies: 2
by THE KESZTHELY KID » 13 Aug 2023, 14:19

Hola Amigo',

Jut spent an hour trying to get the tap to work on my recently acquired 1980 Westphalia Joker. The water tank is just over half full...

2 Replies

7231 Views

Last post by davidoft1
04 Nov 2023, 11:55
RM12F fridge relay for holdsworth villa 3

Last post by Oldiebut goodie « 01 Nov 2023, 18:10
Replies: 5
by Hash brown » 26 Oct 2014, 19:14

So after getting to grips with the new van the first task to get the LB charging by fitting a split charger and taking out all the old bodged wiring...

5 Replies

9437 Views

Last post by Oldiebut goodie
01 Nov 2023, 18:10
Problem starting engine - electrical-related

Last post by cotswoldstony « 01 Nov 2023, 15:47
Replies: 6
by fragmented » 25 Oct 2023, 16:17

Hi all

I have had a problem that has got progressively worse over time. If my starter battery is freshly charged it will start. After driving for a...

6 Replies

9031 Views

Last post by cotswoldstony
01 Nov 2023, 15:47
1983 1.9 DG compatible wiring loom?

Last post by Aidan « 31 Oct 2023, 14:31
Replies: 1
by Fun. » 30 Oct 2023, 22:45

Hi All

I’m trying to find a part like this for a 1983 1.9 DG ignition system (I think), this one doesn’t say it’s compatible and I’m wondering if...

1 Replies

6849 Views

Last post by Aidan
31 Oct 2023, 14:31
Brake warning light

Last post by CombiBlues « 25 Oct 2023, 15:34
Replies: 9
by JeffRoo » 27 Sep 2018, 19:19

Hi
I have a ‘84 Caravelle and on the dash top left hand side is a brake warning indicator. Nothing ever lights up. Ive had a look and a unit is...

9 Replies

10977 Views

Last post by CombiBlues
25 Oct 2023, 15:34
Inside of Headlight Glass Dirty. Cleaning Ideas Please.

Last post by mike the van « 20 Oct 2023, 17:45
Replies: 6
by PaulG » 20 Oct 2023, 09:50

Hi all, I searched but did not find so wondered if anyone else has experienced the above please?

I got an MOT advisory yesterday that my headlights...

6 Replies

8328 Views

Last post by mike the van
20 Oct 2023, 17:45
Headlamp switch variants

Last post by ZsZ « 11 Oct 2023, 13:32
Replies: 7
by Simon Baxter » 10 Oct 2023, 21:59

How do, with supplies drying up of some of the oddball headlamp switches leaving 2 switches available on the aftermarket I thought I'd dig in to ETKA...

7 Replies

8751 Views

Last post by ZsZ
11 Oct 2023, 13:32
Starting Issue

Last post by RogerT « 10 Oct 2023, 21:28
Replies: 7
by newkid » 10 Oct 2023, 01:21

Hi.

Hoping someone can help. Mum's van has for the 11 years of ownership had a starting issue that i finallywant to resolve.

It's a 1984 1.6cs....

7 Replies

8271 Views

Last post by RogerT
10 Oct 2023, 21:28
Immobilizer not working

Last post by Simon Baxter « 10 Oct 2023, 21:14
Replies: 3
by JohnRedpath » 03 Jul 2023, 02:57

Hello everyone.
My T25 immobilizer has stopped working but the van runs fine.
Normally if I try to drive the van with the immobiliser switched on....

3 Replies

7250 Views

Last post by Simon Baxter
10 Oct 2023, 21:14
Split charge relay on 1983 Trident

Last post by Mocki « 07 Oct 2023, 18:28
Replies: 1
by stephenwalls » 07 Oct 2023, 18:19

Hi everyone,
I want to fit a split charge relay on my 1988 T25 autosleeper Trident, so I need to run a wire from the van battery under the drivers...

1 Replies

6576 Views

Last post by Mocki
07 Oct 2023, 18:28
Rev counter

Last post by Ckent « 06 Oct 2023, 17:36
Replies: 5
by Ckent » 03 Oct 2023, 19:48

Looking to fit a rev counter (bolt on) simply as new to vw (especially of this era) - is there a signal I can take anywhere near the dash (as many...

5 Replies

8144 Views

Last post by Ckent
06 Oct 2023, 17:36
T25 1.9 dg PETROL NO SPARK

Last post by Stesaw « 04 Oct 2023, 17:32
Replies: 4
by VERAT25 » 02 Oct 2023, 12:37

looking for some help please (based in cardiff )
just went to start van after 3 weeks (running fine last run)
i have no spark at the plugs/ have...

4 Replies

7513 Views

Last post by Stesaw
04 Oct 2023, 17:32
Not starting, could the horn issue be contributing to this?

Last post by AlBundy « 29 Sep 2023, 20:57
Replies: 4
by AlBundy » 28 Sep 2023, 10:24

The van is currently at the body shop for some rust repair and bodywork fixes, but after having left it there, they haven't been able to get it...

4 Replies

7472 Views

Last post by AlBundy
29 Sep 2023, 20:57
Glow plugs not working after head gasket replacement

Last post by CoalMarx « 29 Sep 2023, 06:50
Replies: 2
by CoalMarx » 28 Sep 2023, 18:46

Unfortunately i blew the gasket on my 1.7 diesel ky. I already had a problem with a buzzing dash and oil filter light, but then we lost the lights on...

2 Replies

6904 Views

Last post by CoalMarx
29 Sep 2023, 06:50
Radiator only works on full speed

Last post by TONYT25T25 « 26 Sep 2023, 20:52
Replies: 3
by hightoprob » 24 Sep 2023, 21:27

Hi. I've been trying to get my rad fan working correctly on my 1983 1.9dg (previous owner had it running on a chicken switch using flex power cable...

3 Replies

7082 Views

Last post by TONYT25T25
26 Sep 2023, 20:52
Horn troubles

Last post by matthew13 « 25 Sep 2023, 20:29
Replies: 16
by matthew13 » 24 Sep 2023, 13:18
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Hi all, I have 1983 2ltr Aircooled van. Horn had stopped working so just replaced it and now all I get when I press the horn inn the steering wheel...
16 Replies

15050 Views

Last post by matthew13
25 Sep 2023, 20:29
FM Aerial questions

Last post by Mocki « 24 Sep 2023, 19:08
Replies: 6
by Donald360 » 23 Sep 2023, 13:32

Hi

I need to refit an aerial for the radio in my van, but I don't want to drill a hole in the newly restored body if I can help it.

Do I need to...

6 Replies

8774 Views

Last post by Mocki
24 Sep 2023, 19:08
Original radio wesfalia joker

Last post by Marktwain « 23 Sep 2023, 10:21
Replies: 11
by Marktwain » 11 Sep 2023, 02:03

Does anyone know which radio would have been fitted in a 1989 westfalia joker, when they were new? Mine is a RHD uk market one. I am interested in...

11 Replies

11002 Views

Last post by Marktwain
23 Sep 2023, 10:21

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