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	2 times 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

51512 Views

Last post by Hacksawbob
10 Feb 2013, 23:56
Where's my buzzer?

Last post by Robsey « 23 Nov 2025, 13:18
Replies: 5
by Rik » 21 Nov 2025, 21:27

Hi,

I've seen many on here complain about the buzzer of doom . I want that too!

My van doesn't have a audible clue for the warning lights, and as...

5 Replies

178 Views

Last post by Robsey
23 Nov 2025, 13:18
Anyone know how to diagnose a faulty PCB

Last post by TwinTurbo « 21 Nov 2025, 21:33
Replies: 2
by crazyhorse » 20 Nov 2025, 16:02

My cruise control waeco MS50 has suddenly stopped working.. it doesnt detect the signal from the tacho, tacho is still working so maybe something has...

2 Replies

136 Views

Last post by TwinTurbo
21 Nov 2025, 21:33
On Board Wifi Setup

Last post by keynsham1 « 15 Nov 2025, 20:53
Replies: 17
by keynsham1 » 25 Aug 2025, 18:07
1

2
Has anyone got experience of using this:
17 Replies

6086 Views

Last post by keynsham1
15 Nov 2025, 20:53
Identify this wire

Last post by prossett « 12 Nov 2025, 20:15
Replies: 5
by prossett » 09 Nov 2025, 22:08

Found in the dashboard of a 1985 Reimo camper, 1.9L petrol water-cooled. The round ground was behind where the stereo would go, not attached to...

5 Replies

592 Views

Last post by prossett
12 Nov 2025, 20:15
Headlights blow indicator fuse

Last post by chook12 « 09 Nov 2025, 21:21
Replies: 4
by chook12 » 29 Oct 2025, 05:22

1982 EFI 2l air-cooled. Upgraded headlight relays.
Upgraded the headlight wiring a few years ago now with power straight to headlights via fuses and...

4 Replies

913 Views

Last post by chook12
09 Nov 2025, 21:21
123 ignition in 1.6 CT Transporter

Last post by deanclean « 09 Nov 2025, 15:55
Replies: 2
by deanclean » 09 Nov 2025, 03:32

Hello all,
I have been researching a 123 ignition for my 1981 single cab Transporter. Its a CT motor and has the stock DVDA distributor and a...

2 Replies

399 Views

Last post by deanclean
09 Nov 2025, 15:55
Another fast flashing indicator question

Last post by Aidan « 08 Nov 2025, 13:39
Replies: 5
by adsnape » 06 Nov 2025, 19:15

My right indicator is behaving like a bulb is burned out, with rear and internal warning light going double speed, and the right headlight is...

5 Replies

804 Views

Last post by Aidan
08 Nov 2025, 13:39
Wiring on Rear of Speedometer.

Last post by cobblers « 05 Nov 2025, 08:51
Replies: 5
by keynsham1 » 04 Nov 2025, 13:59

I am dabbling with the idea of fitting a GPS speedo in place of my original. I have found one I like and it fits well (in an old unit, not my own!!)...

5 Replies

811 Views

Last post by cobblers
05 Nov 2025, 08:51
Speedo needle won't come off help

Last post by davidoft1 « 28 Oct 2025, 13:50
Replies: 3
by Swordfish93 » 28 Oct 2025, 12:11

Hello, I have a 1983 westy (1.9dg) the speedo is removed and I am trying to remove the needle but it will not come off. I have been prying at this...

3 Replies

902 Views

Last post by davidoft1
28 Oct 2025, 13:50
Headlight relay upgrade

Last post by jigarai « 27 Oct 2025, 14:50
Replies: 4
by jigarai » 25 Oct 2025, 20:07

I’ve built up a relay setup for the headlights as shown here. It also includes a headlight buzzer using relay 292.

I used a spare fuse box to build...

4 Replies

984 Views

Last post by jigarai
27 Oct 2025, 14:50
Central locking motor contact springs

Last post by Aidan « 15 Oct 2025, 12:02

by Aidan » 15 Oct 2025, 12:02

I know that very, very few people would ever try and refurbish a central locking motor assembly now, because you can buy cheap Chinese version of the...

0 Replies

4263 Views

Last post by Aidan
15 Oct 2025, 12:02
Replaced starter motor, electrical fault

Last post by NoobyNiall « 13 Oct 2025, 17:54
Replies: 8
by NoobyNiall » 11 Oct 2025, 12:16

:(

Hello all,

My starter motor failed, got a replacement from Rhino automotive.
Put Everything back in its place, mechanically.

Electrically not...

8 Replies

3427 Views

Last post by NoobyNiall
13 Oct 2025, 17:54
What's this wire

Last post by Buster Bungo « 08 Oct 2025, 20:10
Replies: 2
by Buster Bungo » 06 Oct 2025, 20:12

I was ripping out some redundant wiring at the weekend, resolving years of add-ons that no longer work and found this wire just behind the fuse/relay...

2 Replies

4339 Views

Last post by Buster Bungo
08 Oct 2025, 20:10
Sooty plugs all of a sudden….? Summer holiday departure imminent..

Last post by icosahedron « 06 Oct 2025, 12:41
Replies: 5
by spanishfly » 17 Jul 2025, 16:19

You know those people you only hear from when they need something…? That appears to be me :oops: .

2.1dj syncro rebuilt by me a few years ago with...

5 Replies

6127 Views

Last post by icosahedron
06 Oct 2025, 12:41
T3 14 pin connecter size

Last post by icosahedron « 05 Oct 2025, 06:34
Replies: 1
by Swordfish93 » 04 Oct 2025, 19:03

I need to repair my instrument cluster harness since the last owner cut it. What is the size of the pins that go in the connector so I order the...

1 Replies

3755 Views

Last post by icosahedron
05 Oct 2025, 06:34
Blower motor replacement

Last post by multisi « 03 Oct 2025, 15:16
Replies: 18
by Rik » 27 Sep 2025, 15:05
1

2
Hey all,

Working on a replacement of my blower motor and the old coolant lines up there. Just got the dash out after a lot off hassle with some...
18 Replies

6985 Views

Last post by multisi
03 Oct 2025, 15:16
Alternator wire ?

Last post by Gino D camper « 02 Oct 2025, 16:19
Replies: 5
by Gino D camper » 22 Sep 2025, 11:59

Hi all,

So..van is a early 1.6 air-cooled fella. Problem I'm having is he having removed the engine for work, upon re installation, I can't find...

5 Replies

2608 Views

Last post by Gino D camper
02 Oct 2025, 16:19
Leisure battery not charging while driving

Last post by Mocki « 01 Oct 2025, 17:40
Replies: 1
by BobbyOrbit » 01 Oct 2025, 10:05

Hi. We had some problems with our very old leisure battery (holding charge, sulphur smells etc), so replaced it with a new one. However, it seems not...

1 Replies

3821 Views

Last post by Mocki
01 Oct 2025, 17:40
Dashboard PCB Replacement (CJH Design)

Last post by TwinTurbo « 23 Sep 2025, 19:57
Replies: 135
by The Hairy Camper » 17 Jun 2025, 10:43
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6

7

8

9

10
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...
135 Replies

29394 Views

Last post by TwinTurbo
23 Sep 2025, 19:57
OEM wiring harness manufacturer design schematics?

Last post by DerCribben « 21 Sep 2025, 04:35
Replies: 5
by DerCribben » 19 Sep 2025, 10:27

I know this is a stretch, but has anyone seen the actual manufacturing schematics sent to the electric shops that built the original wiring harnesses...

5 Replies

5035 Views

Last post by DerCribben
21 Sep 2025, 04:35
Headlights washers electrical connetions 89' Multivan

Last post by hotpod « 10 Sep 2025, 12:07
Replies: 1
by Wiader » 01 Sep 2025, 18:00

Hi, I bought kit to install headlights washers for my van (tank, pump, sprinklers, etc), but I'm missing relay, which one do I need? Also how to...

1 Replies

4972 Views

Last post by hotpod
10 Sep 2025, 12:07
Can a T25 run an alternator charger?

Last post by Rosie n' Jim « 09 Sep 2025, 18:51
Replies: 4
by tomrussell94 » 28 Aug 2025, 11:34

Hi all,

I currently run my T25's power (lights/fridge etc) through a bluetti power station (AC180) as it saved the hassle and space of a leisure...

4 Replies

5651 Views

Last post by Rosie n' Jim
09 Sep 2025, 18:51
usb into cigarette lighter

Last post by Aidan « 07 Sep 2025, 18:06
Replies: 9
by Pauld » 02 Sep 2025, 15:24

Hi, i got a usb port to fit instead of cigarette lighter. The rear of lighter has two brown wires together one red and one blue/Grey . The new...

9 Replies

5713 Views

Last post by Aidan
07 Sep 2025, 18:06
Wiring confusion!!

Last post by Al Housman « 04 Sep 2025, 19:48
Replies: 5
by Al Housman » 03 Sep 2025, 16:00

I almost have the syncro back together and am just finishing the wiring but I seem to have a wire over and can't for the life of me figure out where...

5 Replies

5403 Views

Last post by Al Housman
04 Sep 2025, 19:48
Battery Charging

Last post by isaacfull « 03 Sep 2025, 18:01
Replies: 5
by Burtybassett » 17 Jul 2024, 18:06

Hi guy's 👋
Question for the T25/T3 Massive...

Just taken my drivers seat out on my Westie to charge up the leisure battery ready for camping this...

5 Replies

6484 Views

Last post by isaacfull
03 Sep 2025, 18:01
Old solar panel- I think it's lost it's oomph

Last post by slowcoach « 03 Sep 2025, 10:12

by slowcoach » 03 Sep 2025, 10:12

I've had a rigid 130w panel on the roof for at least 12 years, doing it's thing with no maintenance at all. I saw about a year ago that's had an...

0 Replies

6678 Views

Last post by slowcoach
03 Sep 2025, 10:12
Starter engine/solenoid problems

Last post by Vodim « 02 Sep 2025, 14:11
Replies: 10
by Vodim » 31 Aug 2025, 13:24

My T25 Diesel from 90 always starts very easily but all of a sudden it’s dead. When turning the key the starter engine starts but the typical sound...

10 Replies

5553 Views

Last post by Vodim
02 Sep 2025, 14:11
Solar trickle charger

Last post by ajsimmo « 02 Sep 2025, 14:06
Replies: 10
by JeffRoo » 30 Aug 2025, 06:54

Hi all,
Been thinking about getting a couple of solar chargers to maintain leisure and main batteries. Has anyone got any recommendations on the ones...

10 Replies

6010 Views

Last post by ajsimmo
02 Sep 2025, 14:06
Replacing the dashboard plastic PCB

Last post by TwinTurbo « 01 Sep 2025, 11:53
Replies: 446
by MidLifeCrisis » 13 Dec 2013, 13:55
1

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26

27

28

29

30
I just replaced the plastic PCB on my dashboard broadly following Covkid's instuctions in the Wiki;

I thought the PCB layout that I used might be...
446 Replies

234624 Views

Last post by TwinTurbo
01 Sep 2025, 11:53
Brake lights - now Sorted!

Last post by badgerfax « 30 Aug 2025, 07:18
Replies: 11
by TheRealExile » 13 May 2024, 18:05

Whilst going through testing all lights I noticed today that the brake lights don't work.

I pulled this out of the drivers side unit!

What is...

11 Replies

7224 Views

Last post by badgerfax
30 Aug 2025, 07:18
Leisure battery advice

Last post by dcworm57 « 30 Aug 2025, 04:56
Replies: 35
by Shinnster » 09 Apr 2025, 17:22
1

2

3
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...
35 Replies

22728 Views

Last post by dcworm57
30 Aug 2025, 04:56
Oil pressure buzzer

Last post by Robsey « 28 Aug 2025, 20:26
Replies: 4
by F41XTH » 28 Aug 2025, 11:58

I took both the rocket covers off to try and diagnose why they were both leaking, I've got new gaskets to put on but took it for a quick errand drive...

4 Replies

5166 Views

Last post by Robsey
28 Aug 2025, 20:26
Reverse lights

Last post by F41XTH « 28 Aug 2025, 14:54
Replies: 2
by F41XTH » 25 Aug 2025, 17:10

I have no reverse lights at all. The bulbs work as I have checked them

A multimeter read on the reverse wire comes in at 3v, could anyone please...

2 Replies

5185 Views

Last post by F41XTH
28 Aug 2025, 14:54
Gasure wiring diagram needed

Last post by crazydiamond « 27 Aug 2025, 09:15
Replies: 4
by crazydiamond » 25 Aug 2025, 15:07

My LPG ws installed hundreds of years ago by thr late great Steve Shaw Gasure. It stopped running today, and it appears that the shutoff solonoid on...

4 Replies

5156 Views

Last post by crazydiamond
27 Aug 2025, 09:15
Confused about solar arragements...

Last post by Rosie n' Jim « 26 Aug 2025, 18:56
Replies: 1
by bubba slapbum » 23 Aug 2025, 19:22

Why are you forbidden from doing uneven panel numbers on a single MPPT?

I have 3x in series already and would like to add an uneven number in...

1 Replies

4917 Views

Last post by Rosie n' Jim
26 Aug 2025, 18:56
No parking light on an 84 westy

Last post by pirate-pete « 25 Aug 2025, 16:51
Replies: 7
by badgerfax » 23 Aug 2025, 09:49

My 83/84 Westy has no parking break warning light. Is this normal for early vans?
I had a look through the bentley PDF on here and it shows a parking...

7 Replies

5559 Views

Last post by pirate-pete
25 Aug 2025, 16:51
rear brake lights

Last post by digaholedumper « 25 Aug 2025, 07:32
Replies: 12
by tonyandhelen » 17 Oct 2014, 15:03

hi all, just wondering if anyone has had the same problem i m experiencing. my rear brake lights seem to stay on even when the ignition is off,...

12 Replies

12612 Views

Last post by digaholedumper
25 Aug 2025, 07:32
lumpy idle and backfire

Last post by Dad « 24 Aug 2025, 18:58
Replies: 5
by JulesMartin » 02 Aug 2025, 08:41

Hi Guys, thanks in advance for reading and any help much appreciated. I'll have to give you a bit of background to the problem first. T25 1986...

5 Replies

5460 Views

Last post by Dad
24 Aug 2025, 18:58
Coolant Temp LED Not working (No flashing or solid on when gauge Sig shorted to ground)

Last post by ManicGTI « 22 Aug 2025, 21:43
Replies: 7
by ManicGTI » 22 Aug 2025, 08:45

So, my coolant gauge LED does not illuminate. No flashing at start up, no flashing with level sender unplugged or 42/43 relay removed.
Also, no...

7 Replies

5443 Views

Last post by ManicGTI
22 Aug 2025, 21:43
Some clarity for wire sizing for 2nd leisure battery

Last post by bubba slapbum « 21 Aug 2025, 16:33

by bubba slapbum » 21 Aug 2025, 16:33

Hi guys. I just read through this thread: viewtopic.php?t=176547

There seem to be two schools of though though which seem almost equally popular....

0 Replies

7086 Views

Last post by bubba slapbum
21 Aug 2025, 16:33
Auxiliary water pump wire

Last post by DarrenC90 « 21 Aug 2025, 07:09
Replies: 25
by DarrenC90 » 24 Jul 2025, 21:57
1

2
Hi fellow T25 owners. Please help. I bought a van with what I’m pretty sure is an AAZ engine conversion.

The auxiliary water pump does not come on...
25 Replies

43371 Views

Last post by DarrenC90
21 Aug 2025, 07:09
Earth points

Last post by R0B « 19 Aug 2025, 19:02
Replies: 2
by Jay Goll » 19 Aug 2025, 11:28

Hi,

I wanted to check the article on bad earths in wiki, anyone send it to me as I can’t open wiki on my phone for some reason.

Thanks

Jay

2 Replies

5130 Views

Last post by R0B
19 Aug 2025, 19:02
1.9 WBX Distributor Woes

Last post by Callie’s Camper « 16 Aug 2025, 15:01
Replies: 3
by Callie’s Camper » 26 Jul 2025, 22:22

Good Evening!

First post so apologies is it’s in the wrong location…

I have a 1.9l WBX T25 panel van which I have been going through over the past...

3 Replies

8428 Views

Last post by Callie’s Camper
16 Aug 2025, 15:01
Westfalia tow bar wiring

Last post by Simon Baxter « 13 Aug 2025, 14:45
Replies: 4
by paradox » 21 Jul 2025, 18:38

Would the tow bar socket on a German import westfalia be wired the same as a uk trailer plug?

I connected my trailer up today and the lights are not...

4 Replies

10672 Views

Last post by Simon Baxter
13 Aug 2025, 14:45
T25 Autosleeper fresh water tank gauge and probe

Last post by Cobra88 « 12 Aug 2025, 13:34
Replies: 3
by Urge38 » 12 Aug 2025, 12:05

Hi Guys

need a little tec on the Lab-Craft ltd Model No DS 220d, more so, I am looking to know what the meter requires in hOms to read correctly.
My...

3 Replies

5297 Views

Last post by Cobra88
12 Aug 2025, 13:34
Westfalia Atlantic rear lights

Last post by TwinTurbo « 07 Aug 2025, 04:34
Replies: 3
by paradox » 25 Jul 2025, 09:12

Are these the original rear lights for a 1990 westfalia Atlantic?
They have a black plastic section between the lamp and number plate that other t...

3 Replies

18395 Views

Last post by TwinTurbo
07 Aug 2025, 04:34
MOT failure. Watch video, are my stop lights working?

Last post by syncropatrick « 05 Aug 2025, 20:47
Replies: 2
by syncropatrick » 05 Aug 2025, 10:45

Van failed MOT on offside stop lamp.
I think they’re working correctly.
Please watch the 1 minute video and comment.
Hella bulb holders.
Each...

2 Replies

5261 Views

Last post by syncropatrick
05 Aug 2025, 20:47
LED (DOT approved) Headlights

Last post by THE KESZTHELY KID « 05 Aug 2025, 12:25

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...

0 Replies

7215 Views

Last post by THE KESZTHELY KID
05 Aug 2025, 12:25
Battery drained after long ride

Last post by TwinTurbo « 03 Aug 2025, 06:42
Replies: 9
by FarWare12 » 30 Jul 2025, 17:56

I've been experiencing some electrical issues. I drove about 5 hours with the van and the next morning, the van would not start. The voltage on the...

9 Replies

23842 Views

Last post by TwinTurbo
03 Aug 2025, 06:42

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