Electrical & Instrumentation

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Most liked posts	Author	Posted	Liked	Forum
LED warning lights for DASH voltage?	VWKat	21 Jun 2026, 19:02	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

73904 Views

Last post by Hacksawbob
10 Feb 2013, 23:56
Aftermarket Rev Counters

Last post by davidoft1 « 58 minutes ago
Replies: 1
by Madmaninshed » Today, 10:39

Hi, My 1900 DG engined water cooled 1986 van has a 2” aftermarket analogue rev counter, fitted by the last owner. It jumps about, and gives...

1 Replies

16 Views

Last post by davidoft1
58 minutes ago
Brake lights always on my 1985 T25

Last post by mickcorr « Yesterday, 15:59
Replies: 5
by jakestroudley » 25 Jun 2026, 21:28

I have a RHD 1985 T25 and the brake lights are staying on full time. I have read a post to see what the issue is, and I think I understand that the...

5 Replies

162 Views

Last post by mickcorr
Yesterday, 15:59
LED warning lights for DASH voltage?

Last post by Aidan « 24 Jun 2026, 14:51
Replies: 8
by VWKat » 17 Jun 2026, 13:05

Hello good people,
Does anyone know the voltage for the LED Warning lights on the dash? I cannot find this information anywhere.
I am having trouble...

8 Replies

955 Views

Last post by Aidan
24 Jun 2026, 14:51
2E3 "SERVO" CHOKE.

Last post by tobydog « 20 Jun 2026, 09:50
Replies: 2
by TwinTurbo » 19 Jun 2026, 20:24

Do people generaly find the 2e3 autochoke a bit rubbish?

I am designing a replacement for the auto choke ditching the spring, cams, bi metalic and...

2 Replies

349 Views

Last post by tobydog
20 Jun 2026, 09:50
1990 1.9 DG Waterboxer replacement rotor arm shorted out?

Last post by tobydog « 17 Jun 2026, 08:02
Replies: 9
by SWTurbo » 11 Jun 2026, 19:39

Fitted a new rotor arm and distributor cap to a 1.9 DG, few miles down the road it broke down and a recovery company said the new rotor arm was...

9 Replies

1404 Views

Last post by tobydog
17 Jun 2026, 08:02
Cu engine not running on lh bank

Last post by silverbullet « 16 Jun 2026, 06:45
Replies: 3
by crazydiamond » 14 Jun 2026, 13:55

Im pulling my hairout.
2LT cu Aircooled
on lpg or petrol, new plugs and leads and tried old leads and plus as well. Found a manifold leak but fixed...

3 Replies

1038 Views

Last post by silverbullet
16 Jun 2026, 06:45
Manifold Heater problem. 1.9 WBX early

Last post by VWKat « 14 Jun 2026, 20:59
Replies: 17
by VWKat » 15 Feb 2018, 15:21
1

2
Hello,

Back again. New day, new problem.

It started out with a small voltage drop, then I couldn't start my van and there was a large voltage...
17 Replies

7582 Views

Last post by VWKat
14 Jun 2026, 20:59
1.9DG - No Spark

Last post by VWKat « 14 Jun 2026, 20:00
Replies: 3
by VWKat » 14 May 2026, 13:18

Hello, returning again - still got my Van, 20+ years - still love it, I'm giving it an overhaul and also a repaint currently, windscreen also needs...

3 Replies

1519 Views

Last post by VWKat
14 Jun 2026, 20:00
LED (DOT approved) Headlights. A question

Last post by mioba « 11 Jun 2026, 17:57
Replies: 3
by THE KESZTHELY KID » 11 Jun 2026, 12:15

I am considering purchasing a set for Bezza, my 1980 Westy. On my failed trip :( to Holland I fitted the 'Beam-Benders' onto Bezza's 7 H4...

3 Replies

842 Views

Last post by mioba
11 Jun 2026, 17:57
Dashboard PCB Replacement (CJH Design)

Last post by TwinTurbo « 10 Jun 2026, 14:03
Replies: 158
by The Hairy Camper » 17 Jun 2025, 10:43
1

…

7

8

9

10

11
So, like I'm sure many of you have also experienced by now, the dashboard ribbon on my van is starting to fall apart in a few places. I've ordered a...
158 Replies

207298 Views

Last post by TwinTurbo
10 Jun 2026, 14:03
Red oil warning light flashing

Last post by Aidan « 10 Jun 2026, 07:40
Replies: 13
by Madmaninshed » 04 Jun 2026, 10:29

Hi, can anyone help me with this problem please?
our van has just been fully serviced, including new oil and filter. Total mileage is a genuine 56K...

13 Replies

1987 Views

Last post by Aidan
10 Jun 2026, 07:40
Earth for EHU consumer unit

Last post by pirate-pete « 08 Jun 2026, 21:14
Replies: 2
by Lmh2000 » 07 Jun 2026, 11:35

Afternoon all.

I’m having to re-do the EHU electrics as the original German-made 230V RCD/MCB unit (Netzmatic) no longer works. The unit doesn’t...

2 Replies

719 Views

Last post by pirate-pete
08 Jun 2026, 21:14
Temp gauge not. Working 1.9aaz LHD

Last post by pirate-pete « 04 Jun 2026, 12:29
Replies: 4
by jacko1967 » 20 May 2026, 15:47

Hi to the auto electrician on hear I am afraid I am not one 🤣.
So today I tried to fix my temp gauge I fitted a new brickwerks sensor in the engine...

4 Replies

1960 Views

Last post by pirate-pete
04 Jun 2026, 12:29
Analogue clock completely dead

Last post by Madmaninshed « 04 Jun 2026, 10:56
Replies: 6
by Madmaninshed » 16 May 2026, 13:32

Hi, I read with interest an excellent earlier post showing how to replace the two capacitors that often fail on the analogue dash clocks. His clock...

6 Replies

3763 Views

Last post by Madmaninshed
04 Jun 2026, 10:56
Changed the voltage regulator but where does this go!?

Last post by mioba « 02 Jun 2026, 07:33
Replies: 14
by Samanthington » 28 May 2026, 12:49

Hi all

So I’ve been having electrical problems for a while on the van. I just put it down to being a cheapskate and only buying 2nd hand batteries...

14 Replies

2239 Views

Last post by mioba
02 Jun 2026, 07:33
speedo dial diameter

Last post by jordan01070 « 01 Jun 2026, 19:25
Replies: 18
by jordan01070 » 17 May 2026, 11:07
1

2
HI does anybody know the speedo diameter for a late 1.9 dg petrol engine as the cable has broken again and I am looking at getting a gps speedo, I...
18 Replies

3418 Views

Last post by jordan01070
01 Jun 2026, 19:25
Electrical Drain! do i start to pull fuses?

Last post by ZsZ « 25 May 2026, 05:40
Replies: 6
by NoobyNiall » 18 May 2026, 18:44

Hi All,

The van wasn't started in 4 weeks, found the battery completely dead/ murdered in fact :?

Got a new battery, Van started and started some...

6 Replies

2264 Views

Last post by ZsZ
25 May 2026, 05:40
LED (DOT approved) Headlights

Last post by silverbullet « 23 May 2026, 12:58
Replies: 14
by THE KESZTHELY KID » 05 Aug 2025, 12:25

Bueno Estente,

I have seen such as 7 inch LED headlights LAMP fit Land Rover Defender VW T25 T3 Vanagon sealed beam | eBay UK on Fleabay and...

14 Replies

40772 Views

Last post by silverbullet
23 May 2026, 12:58
Starter Cable upgrade

Last post by Simon Baxter « 22 May 2026, 14:32
Replies: 26
by Sir Brixalot » 19 Jun 2018, 18:18
1

2
Going to do it as per wikki -Thanks CK.
There is a massive cable clamped on the positive battery post which goes through the floor beneath the seat....
26 Replies

13489 Views

Last post by Simon Baxter
22 May 2026, 14:32
Replacing battery and perhaps upgrading alternator & split charge relay?

Last post by OldNick « 18 May 2026, 21:35

by OldNick » 18 May 2026, 21:35

Hi, I acquired a February 1985 T3 Westfalia Joker (1.9 L petrol engine) last year. I fitted a Bluetti Charger-1 last year to charge a Jackery whilst...

0 Replies

1175 Views

Last post by OldNick
18 May 2026, 21:35
Radio replacement

Last post by Robsey « 15 May 2026, 23:48
Replies: 2
by ParaZiTsp » 15 May 2026, 04:18

Just bought a t3, and the radio is always getting power even when the key is out. Is that normal for t3s or just shoddy wiring? Will it mess anything...

2 Replies

1451 Views

Last post by Robsey
15 May 2026, 23:48
Unknown broken wire - please help identify

Last post by silverbullet « 15 May 2026, 12:44
Replies: 1
by h3nry » 15 May 2026, 08:40

Does anybody know what this red wire is for?

Has a split in the insulation with some temp tape to cover it - as well as a black wire which is...

1 Replies

1324 Views

Last post by silverbullet
15 May 2026, 12:44
PCB Damage Repair Advice

Last post by maxstu « 13 May 2026, 17:42
Replies: 8
by maxstu » 11 May 2026, 19:28

My Autosleeper HAD a perfect blue foil with everything working. But the clock was a bit lazy on some days. And the temp needle a bit higher than it...

8 Replies

3213 Views

Last post by maxstu
13 May 2026, 17:42
Heater blower motor

Last post by silverbullet « 12 May 2026, 06:32
Replies: 7
by Komet_V2 » 14 Mar 2026, 13:31

So, any movement through the blower settings doesn't activate the blower. Can it be anything other than the blower motor. When it went, there was a...

7 Replies

15458 Views

Last post by silverbullet
12 May 2026, 06:32
GlowPlug Issues

Last post by silverbullet « 07 May 2026, 06:41
Replies: 3
by T25ClubJoker » 04 May 2026, 09:48

I've had a little delve into a few different things regarding glow plugs and issues with wiring, relays etc but can't seem to find any advice...

3 Replies

1877 Views

Last post by silverbullet
07 May 2026, 06:41
Oil light flashing, fuel and oil guages not working

Last post by Middle29 « 05 May 2026, 10:54
Replies: 3
by Middle29 » 26 Apr 2026, 11:44

Hello all. Took my starter out to charge it up. When I put it back one of the smaller wires from the alternator had snapped (I think the blue one is...

3 Replies

2095 Views

Last post by Middle29
05 May 2026, 10:54
Brown wire on steering column

Last post by Noah_Blake « 29 Apr 2026, 22:55
Replies: 6
by Beakster » 19 Apr 2026, 19:15

Dropped my steering column down to remove the dash, putting it back in now and insert this broken wire.

There's a wire coming out of the hole in...

6 Replies

3056 Views

Last post by Noah_Blake
29 Apr 2026, 22:55
DLS ignition unit musings

Last post by silverbullet « 29 Apr 2026, 13:57
Replies: 14
by silverbullet » 23 Apr 2026, 11:01

251906083A, manufactred by Telefunken (TLF) or Siemens or AEG. Marked 4-zyl.

I've been thinking a bit about this box of mysteries and what it...

14 Replies

4086 Views

Last post by silverbullet
29 Apr 2026, 13:57
music system

Last post by Robsey « 26 Apr 2026, 20:39
Replies: 3
by Freddievan » 25 Apr 2026, 20:06

I haven't bought a car stereo for 15 years and I'm aware that they're probably quite different to what they were back then. Any...

3 Replies

2187 Views

Last post by Robsey
26 Apr 2026, 20:39
Interior light - Galley

Last post by silverbullet « 26 Apr 2026, 06:47
Replies: 3
by Freddievan » 25 Apr 2026, 11:38

Hi

Shortly after I bought my van, around 13 years ago, my galley light (over the cooker) died. I replaced it with something that looked like the...

3 Replies

2238 Views

Last post by silverbullet
26 Apr 2026, 06:47
pre-1984 fusebox wiring

Last post by Robsey « 23 Apr 2026, 21:56
Replies: 28
by LisaB4 » 21 Jul 2022, 12:51
1

2
Does a simple diagram exist on what colour wire goes in what position on the old type fuse box? I've got a spaghetti mess and no idea what connects...
28 Replies

23934 Views

Last post by Robsey
23 Apr 2026, 21:56
Two spade connectors on starter

Last post by TeeTwenty5 « 23 Apr 2026, 20:27
Replies: 2
by TeeTwenty5 » 23 Apr 2026, 17:59

I have a recon starter to fit but it has two spade connectors, the current one only has one, does anyone know which one I should use for the existing...

2 Replies

2425 Views

Last post by TeeTwenty5
23 Apr 2026, 20:27
Kienzle box on Speedo cable?

Last post by ZsZ « 19 Apr 2026, 07:28
Replies: 4
by shampooefficient » 18 Apr 2026, 16:25

Working under the van I keep getting hit in the face by a little plastic box swinging about in the middle of the speedo cable... I'm about to bolt it...

4 Replies

2861 Views

Last post by ZsZ
19 Apr 2026, 07:28
Engine bay loom identification

Last post by Robsey « 09 Apr 2026, 22:51
Replies: 3
by shampooefficient » 08 Apr 2026, 18:12

Good evening gang.

Being a lucky soul I am now in charge of rebuilding the mother in law's van after several months laid up.

Dropped the engine...

3 Replies

3436 Views

Last post by Robsey
09 Apr 2026, 22:51
Alternator upgrade

Last post by projordio « 08 Apr 2026, 07:34
Replies: 4
by projordio » 07 Apr 2026, 10:08

Hi all
I'm upgrading my alternator from a 65amp to the 90 amp and just after some info about wiring layout.
Ive ran a brand new cable from the...

4 Replies

3031 Views

Last post by projordio
08 Apr 2026, 07:34
T25 Westfalia interior sink tap

Last post by dazzerT251900td « 07 Apr 2026, 18:46
Replies: 3
by dazzerT251900td » 04 Apr 2026, 14:46

Hi all.
I wonder if any one can help me on my sink tap which is very intermittent.
sometimes it works straight away when you turn it and you hear a...

3 Replies

3101 Views

Last post by dazzerT251900td
07 Apr 2026, 18:46
Replaced ignition coil - still stalls

Last post by jrt « 03 Apr 2026, 18:54
Replies: 2
by SammySnake » 03 Apr 2026, 10:26

Hello everyone,

New member - first post!

My dad gave me his T25 as a project but I have no mechanical knowledge - got an Haynes manuel and Google!...

2 Replies

3105 Views

Last post by jrt
03 Apr 2026, 18:54
Led 3-in-1 digital display temp/volts/oil pressure

Last post by keynsham1 « 02 Apr 2026, 08:28
Replies: 2
by lowtimeppl » 26 Mar 2026, 10:26

Hi
Has anyone installed one of these (or like it) in their bus? It came without sensors but the fact sheet has some resistance figures

Any...

2 Replies

14320 Views

Last post by keynsham1
02 Apr 2026, 08:28
Starting problem

Last post by hotpod « 26 Mar 2026, 10:12
Replies: 2
by R0B » 25 Mar 2026, 20:45

The van started up first time. But if I turned it off it would not start again for approx 30 minutes. It was doing my head in. Andy (SyncroAndy) paid...

2 Replies

10235 Views

Last post by hotpod
26 Mar 2026, 10:12
Help with relays and electrics

Last post by CoalMarx « 25 Mar 2026, 09:51
Replies: 2
by CoalMarx » 24 Mar 2026, 11:36

I'm looking for help as my electrics haven't been right since i bought my van as a project. I have a very slow battery drain. Last weekend i realised...

2 Replies

14608 Views

Last post by CoalMarx
25 Mar 2026, 09:51
Radiator fan not kicking in

Last post by silverbullet « 22 Mar 2026, 19:10
Replies: 44
by UnsyP » 26 Jun 2020, 10:10
1

2

3
Please accept my appologies for being a novice, so please also be mindfull of my limited understanding. My radiator fan has recently stopped working....
44 Replies

73797 Views

Last post by silverbullet
22 Mar 2026, 19:10
Heater fan gone - should I replace resistor pack with Jeep spec or PWM controller?

Last post by ManicGTI « 22 Mar 2026, 13:23
Replies: 7
by ManicGTI » 19 Jan 2026, 16:50

Hi all, my heater fan is seized solid and pops fuse on 2+ speeds, so have new motor and seal/foam pack from BW ready to 'pop in'.

While i'm there is...

7 Replies

32074 Views

Last post by ManicGTI
22 Mar 2026, 13:23
Radiator fan

Last post by davidoft1 « 15 Mar 2026, 15:03
Replies: 1
by Komet_V2 » 15 Mar 2026, 13:33

If just looking at the temperature guage, when should the fan kick in? When the dial moves beyond the centre? Mine seems a little inconsistent when...

1 Replies

13377 Views

Last post by davidoft1
15 Mar 2026, 15:03
New starter battery

Last post by ZsZ « 06 Mar 2026, 14:46
Replies: 1
by dcworm57 » 06 Mar 2026, 14:23

1.6 JX diesel . I need a new starter battery . The existing battery came with the van , it’s not the proper one by the looks of it . It doesn’t fill...

1 Replies

14719 Views

Last post by ZsZ
06 Mar 2026, 14:46
Electrical issues / questions 1.9DG water-cooled

Last post by prossett « 01 Mar 2026, 18:50
Replies: 16
by filiphiruta » 27 Feb 2026, 19:36
1

2
Hello guys, this is my first post on this forum, i really hope my questions will not sound stupid.
I recently bought my first ever T3, a 1984 1.9dg...
16 Replies

36304 Views

Last post by prossett
01 Mar 2026, 18:50
1990 T25 Hazard Switch faulty

Last post by Deltaboy78 « 26 Feb 2026, 22:06
Replies: 4
by Deltaboy78 » 26 Feb 2026, 16:46

Hi all.

I have a 1990 T25 and my Hazard Switch is faulty, I purchased a new one
Which is the same one that Just Kampers sell
buttttt its for...

4 Replies

17039 Views

Last post by Deltaboy78
26 Feb 2026, 22:06
A headlight question for owners of Swedish vans

Last post by hotpod « 20 Feb 2026, 15:52
Replies: 3
by hotpod » 20 Feb 2026, 13:44

In my Swedish imported T3, one of the things I love is that when the ignition is on, the rear lights and front low beam headlamps come on with the...

3 Replies

21888 Views

Last post by hotpod
20 Feb 2026, 15:52
MOT Mileage

Last post by Lmh2000 « 15 Feb 2026, 20:50
Replies: 5
by Lmh2000 » 15 Feb 2026, 17:27

When looking at the MOT history of a classic bus with a view to buy is there any reasonable explanation why the mileage might change from km to miles...

5 Replies

20332 Views

Last post by Lmh2000
15 Feb 2026, 20:50
Ignition coil options?

Last post by MarkHughes « 14 Feb 2026, 06:49
Replies: 7
by Shinnster » 11 Feb 2026, 18:25

Hi all,

I have a late van with a 1.9DG and looking to replace my coil. Brickwerks has been out of stock for what seems like over a year now .
A...

7 Replies

22367 Views

Last post by MarkHughes
14 Feb 2026, 06:49

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