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	Once this week	Electrical & Instrumentation

Topics

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Last post

Zig unit suddenly not working

Last post by Smiffo « 30 Apr 2023, 23:22
Replies: 1
by poolhallrichard » 30 Apr 2023, 22:06

Anybody got any suggestions as to why the hookup Zig unit (CF8) on my van has suddenly stopped working? I have had the van hooked up to power over...

1 Replies

452 Views

Last post by Smiffo
30 Apr 2023, 23:22
headlamps brightness boost

Last post by philmcC « 28 Apr 2023, 11:05
Replies: 10
by philmcC » 27 Apr 2023, 16:24

Sorry if this has been discussed before. Which is better, converting headlamps to LED, or using the campervan culture new wiring kit with extra...

10 Replies

1564 Views

Last post by philmcC
28 Apr 2023, 11:05
Engine interference on radio!

Last post by Rosie n' Jim « 25 Apr 2023, 06:06
Replies: 5
by mariner » 18 Apr 2023, 14:35

Hi all. Have just got round to wiring back up 4 additional speakers I have under my rear seat. They are connected to an amp which is in turn...

5 Replies

814 Views

Last post by Rosie n' Jim
25 Apr 2023, 06:06
Leisure Battery Recommendation please

Last post by ZsZ « 24 Apr 2023, 15:05
Replies: 9
by wbmkk » 10 Apr 2023, 15:53

I am looking to buy a new leisure battery for my T25

Due to lockdowns and then a fault, my van wasn't used for well over 2 years.

The existing...

9 Replies

1269 Views

Last post by ZsZ
24 Apr 2023, 15:05
AFM question - DJ / MV / DH / GW engines

Last post by Smiffo « 10 Apr 2023, 19:57
Replies: 7
by Smiffo » 05 Sep 2022, 15:44

All.

Posting separately here outside of another thread, as these questions are specific to the Air Flow Meter that is between the air filter housing...

7 Replies

1098 Views

Last post by Smiffo
10 Apr 2023, 19:57
Delay switching on ignition

Last post by Aidan « 08 Apr 2023, 12:42
Replies: 1
by dhut6 » 08 Apr 2023, 08:35

Hi. My first time post here. Hopefully someone can help shed light on this.

I have a 1985 T25. 1.9 petrol. DG engine I think. Has worked...

1 Replies

458 Views

Last post by Aidan
08 Apr 2023, 12:42
1984 1.6TD T25 DIPPED BEAM RELAY

Last post by muttleypup « 08 Apr 2023, 07:25
Replies: 15
by stevecon » 02 Apr 2023, 15:52
1

2
Excuse my ignorance but I'm going round in circles trying to find an answer. I have side lights and full beam but the main beam is not functioning. I...
15 Replies

1832 Views

Last post by muttleypup
08 Apr 2023, 07:25
Battery charger question

Last post by Cecil « 07 Apr 2023, 16:19
Replies: 7
by CoalMarx » 25 Mar 2023, 11:30

Can anyone help me with this please?

I am planning on running 2 x 105Ah SLA batteries and will be storing the van in a lock up with no power...

7 Replies

1041 Views

Last post by Cecil
07 Apr 2023, 16:19
Alternator failing or wiring?

Last post by adebutter « 03 Apr 2023, 20:49
Replies: 2
by adebutter » 03 Apr 2023, 19:10

I’ve just completed a 350 mile trip in a T3 DG 1.9 to the Lakes.
The voltage was oddly low; hovering around 12V and just under.
I went to check the...

2 Replies

595 Views

Last post by adebutter
03 Apr 2023, 20:49
IC SN29736P from rev counter pulse shaper board

Last post by spanishfly « 01 Apr 2023, 16:45
Replies: 7
by spanishfly » 19 Dec 2022, 19:21

Another day another problem.

Does anyone know if the chip on the tachometer boards normally dies suddenly? Or any other reason for the tach to...

7 Replies

1428 Views

Last post by spanishfly
01 Apr 2023, 16:45
Time for new alternator?

Last post by Robsey « 31 Mar 2023, 23:52
Replies: 9
by Freddievan » 02 Jan 2023, 12:29

I replaced the voltage regulator on my alternator 3 years ago but I'm having the same issues again. Is it time to replace the alternator or just...

9 Replies

1767 Views

Last post by Robsey
31 Mar 2023, 23:52
Instrument panel wiring

Last post by AngeloEvs « 31 Mar 2023, 21:02
Replies: 1
by Gixerman60 » 31 Mar 2023, 11:21

Question re the screw terminals on the back of the panel. There are two sets, top and middle. Anyone know what they are for?
TIA

1 Replies

547 Views

Last post by AngeloEvs
31 Mar 2023, 21:02
Starter issues

Last post by Freddievan « 31 Mar 2023, 14:03
Replies: 4
by Freddievan » 31 Mar 2023, 09:38

I went to start the van a couple of weeks ago and there was nothing but a click . I thought the battery was totally flat. I tried it again and the...

4 Replies

718 Views

Last post by Freddievan
31 Mar 2023, 14:03
Split charged

Last post by mrhutch « 28 Mar 2023, 13:41
Replies: 1
by budice83 » 28 Mar 2023, 11:56

Hello

Been a long time since I been here but good to be back......anyway got a westy and I’m thinking about putting the battery for the engine /...

1 Replies

503 Views

Last post by mrhutch
28 Mar 2023, 13:41
Cigarette Lighter Socket

Last post by mioba « 27 Mar 2023, 21:11
Replies: 11
by TONYT25T25 » 24 Mar 2023, 21:20

The connection sometimes work so suspect a loose connection. I think it is the original fitting with a greenish lit surround. Dont want tobreak it...

11 Replies

1426 Views

Last post by mioba
27 Mar 2023, 21:11
Solar panels

Last post by R0B « 20 Mar 2023, 21:18
Replies: 39
by TONYT25T25 » 01 Oct 2021, 21:30
1

2

3
Not an off grid person, but like to keep both my leisure battery and main battery charged by using a basic solar panel that just attaches to either...
39 Replies

6333 Views

Last post by R0B
20 Mar 2023, 21:18
Rear wiper issue

Last post by Robsey « 15 Mar 2023, 17:59
Replies: 10
by Drewk1 » 05 Mar 2023, 10:36

Just sorting out Vera ready for the new season and I decided to finally look at the non working rear wiper.
I know its not particularly good but its...

10 Replies

1156 Views

Last post by Robsey
15 Mar 2023, 17:59
Aircon problems

Last post by silverbullet « 15 Mar 2023, 08:09
Replies: 4
by 32wbx6 » 09 Mar 2023, 21:05

Hi there from South Africa.

I don't know how many UK busses have or use aircon? Perhaps someone can help me with a problem that I'm struggling...

4 Replies

842 Views

Last post by silverbullet
15 Mar 2023, 08:09
Late wiring swap into early Van

Last post by Robsey « 14 Mar 2023, 22:37
Replies: 7
by sam16v » 13 Mar 2023, 19:29

Has anybody got any experience in swapping a complete wiring loom from a late van (89 caravelle) into an early Van ( 83 Devon).
I have acquired a...

7 Replies

1283 Views

Last post by Robsey
14 Mar 2023, 22:37
SHC dash PCB upgrade with Tach for Aricooled!

Last post by mioba « 14 Mar 2023, 22:04
Replies: 9
by Davegrohl99 » 26 Feb 2023, 20:33

Has anyone used this kit?

Very interested to see how it goes would be interested to see how the tachometer works out!

Sent from my iPhone using...

9 Replies

1674 Views

Last post by mioba
14 Mar 2023, 22:04
Blank Ashtray Pod.

Last post by Robsey « 01 Mar 2023, 00:54
Replies: 4
by Robsey » 23 Feb 2023, 20:03

A few werks ago I asked a company specialising in mods for the T25, whether they would supply an undrilled ashtray insert for my dash.

Tonight, they...

4 Replies

912 Views

Last post by Robsey
01 Mar 2023, 00:54
ECU repair

Last post by R0B « 28 Feb 2023, 19:33
Replies: 7
by R0B » 15 Feb 2023, 12:28

Has anyone had one repaired? or can anyone recommend somewhere to get one looked at. Thanks.

7 Replies

1114 Views

Last post by R0B
28 Feb 2023, 19:33
Injection problem

Last post by Aidan « 21 Feb 2023, 16:14
Replies: 2
by camperman » 21 Feb 2023, 14:02

Whats the difference between a 251 907 393 D and a 251 907 393 C VW T25 2.1 Injection Idle control units

I know ones early and ones late but will...

2 Replies

579 Views

Last post by Aidan
21 Feb 2023, 16:14
T25 Starter Motor Problems - Earth

Last post by DoubleOSeven « 17 Feb 2023, 17:40
Replies: 20
by dannyjwood » 19 Nov 2017, 16:42
1

2
Hi all,

I have a 1.9 Petrol 1988 Caravelle. I started having starter issues, cleaned up all connections etc but it didn't make much of a difference,...
20 Replies

16785 Views

Last post by DoubleOSeven
17 Feb 2023, 17:40
Fuse box multi block

Last post by rubin « 12 Feb 2023, 20:42
Replies: 16
by rubin » 10 Feb 2023, 16:39
1

2
Could someone please tell me what this multi plugs runs?
I’m updating the leisure battery wiring and there is a wire spliced into this multi plug...
16 Replies

1699 Views

Last post by rubin
12 Feb 2023, 20:42
T25 leisure Battery

Last post by Robsey « 10 Feb 2023, 20:21
Replies: 14
by PenelopePitstop » 31 Jan 2023, 16:22

Advice Please:

My T25 leisure battery is dead. Well actually I've had the battery out and recharged it but still no use. No water pump gauge or...

14 Replies

1861 Views

Last post by Robsey
10 Feb 2023, 20:21
Faulty starting question

Last post by pleasestartnow « 08 Feb 2023, 21:37
Replies: 5
by pleasestartnow » 06 Feb 2023, 21:15

Hi there, I have my van in dry storage in a shed nearby and recently the shed owner had to move the van to get at something. Now he regularly does...

5 Replies

769 Views

Last post by pleasestartnow
08 Feb 2023, 21:37
(Mis-diagnosed )Trigger wire replacement

Last post by shrig1969 « 05 Feb 2023, 18:05
Replies: 15
by shrig1969 » 19 Jan 2023, 01:29
1

2
It has been a little while since I last asked for help....
I recently broke down after a long drive, with the trigger wire spade connector being the...
15 Replies

2088 Views

Last post by shrig1969
05 Feb 2023, 18:05
Open barrel crimp tool help

Last post by 3cylinders « 05 Feb 2023, 14:03
Replies: 15
by 3cylinders » 28 Dec 2022, 12:02
1

2
Does anyone know of a crimp tool supplier for open barrel Faston type terminals which can crimp 9.53mm terminals with cable conductor CSA of 10mm2...
15 Replies

2909 Views

Last post by 3cylinders
05 Feb 2023, 14:03
General Temp guage question

Last post by Rickbarr « 04 Feb 2023, 14:54

by Rickbarr » 04 Feb 2023, 14:54

Hi all and a happy weekend.. I have a 1986 T3 Westfalia with a 1.9 non turbo Diesal Aspirated conversion. Recently after a bad overheat: had the head...

0 Replies

38025 Views

Last post by Rickbarr
04 Feb 2023, 14:54
Thoughts on electrical set up

Last post by mariner « 01 Feb 2023, 21:39
Replies: 2
by mariner » 01 Feb 2023, 19:25

Hi all. Having remade my back locker and top locker I'm about to embark on the main unit. I intend to move the leisure battery from under the...

2 Replies

604 Views

Last post by mariner
01 Feb 2023, 21:39
Heater motor fan

Last post by mariner « 31 Jan 2023, 17:48
Replies: 25
by Jilldub » 21 Sep 2022, 21:01
1

2
When I bought the van, the heater motor fan wasn’t working so I can’t describe it’s failure mode.
I guess I need to replace the fan motor, switch,...
25 Replies

3646 Views

Last post by mariner
31 Jan 2023, 17:48
battery location

Last post by multisi « 31 Jan 2023, 09:17
Replies: 9
by Betty boop 1 » 29 Jan 2023, 16:48

good evening all ive been quiet for a while but i know have a question......how much of a job is it to reposition the starting/cranking battery from...

9 Replies

1229 Views

Last post by multisi
31 Jan 2023, 09:17
hazard light switch internals

Last post by Mocki « 30 Jan 2023, 22:33
Replies: 1
by Sans » 30 Jan 2023, 22:25

For anyone wondering what the inside of the hazard switch parts exist it should be as follows.

The switch housing (rocker)
Pin plate (the back...

1 Replies

464 Views

Last post by Mocki
30 Jan 2023, 22:33
VAG 111 999 155A Vehicle Alarm System

Last post by DoubleOSeven « 25 Jan 2023, 18:54
Replies: 4
by Robsey » 15 Jul 2022, 18:11

Last year I happened upon a N.O.S. VAG branded alarm from the 80s.

Part Number :- 111999155A / 111 999 155A for Volkswagen and Audi cars.
(No...

4 Replies

1101 Views

Last post by DoubleOSeven
25 Jan 2023, 18:54
Intermittent brake lights - sorted

Last post by DoubleOSeven « 23 Jan 2023, 18:20
Replies: 2
by DevonAid » 20 Jan 2023, 13:38

Just sharing how I resolved intermittent brake lights, in case it helps others.

This came about as I recently tested all lights before the MOT (all...

2 Replies

619 Views

Last post by DoubleOSeven
23 Jan 2023, 18:20
Alternative instruments and switchgear

Last post by tencentlife « 18 Jan 2023, 21:57
Replies: 164
by silverbullet » 28 Nov 2011, 17:28
1

…

7

8

9

10

11
In an idle moment (and faced with the prospect of pulling the dash out of the 1995 SA to fix the heater wiring) I got to wondering:
What alternative...
164 Replies

162857 Views

Last post by tencentlife
18 Jan 2023, 21:57
Power loss please help.

Last post by Chrishunt « 18 Jan 2023, 17:09
Replies: 12
by Chrishunt » 17 Jan 2023, 10:50

Hi peeps, I’ve got a bit of a problem with my T3 single cab. I had a problem start with a faulty alternator that’s been replaced and problem resolved...

12 Replies

1034 Views

Last post by Chrishunt
18 Jan 2023, 17:09
Big Black Omega Clips.

Last post by airheadboxer « 17 Jan 2023, 21:00
Replies: 11
by Robsey » 30 Dec 2022, 21:06

I wasn't sure if this is a bodywork or electrical topic.

I am looking for a source for the large black Omega clips that hold the big loom to the...

11 Replies

1464 Views

Last post by airheadboxer
17 Jan 2023, 21:00
Zig CF9 replacement issues

Last post by Blue1987 « 17 Jan 2023, 13:22

by Blue1987 » 17 Jan 2023, 13:22

Hello, this is my first time posting. I am looking to get my electrics sorted on the van (few bodged bits done by previous owners). I currently have...

0 Replies

36742 Views

Last post by Blue1987
17 Jan 2023, 13:22
PWM Heater Blower Modification

Last post by Robsey « 08 Jan 2023, 21:49
Replies: 8
by steveo9007 » 22 Nov 2022, 18:01

As i was refurbing my heater blower box, i thought i would upgrade the speed fan resistor to a PWM variable controlled one here is how it is done if...

8 Replies

1755 Views

Last post by Robsey
08 Jan 2023, 21:49
CT1.6 Distributor - part ID and replacement

Last post by sarran1955 « 08 Jan 2023, 16:47
Replies: 2
by Colingrieve » 08 Jan 2023, 13:08

Hi

I’m Trying to identify my distributor on my 1.6CT 1980 T25 if anyone can help me. It’s electronic I believe.

2 Replies

517 Views

Last post by sarran1955
08 Jan 2023, 16:47
main chassis electrical harness length

Last post by ZsZ « 08 Jan 2023, 11:35
Replies: 1
by ZsZ » 04 Jan 2023, 16:30

Hi all again!

I am planning to add fog lights to my van. I am not sure if my main chassis harness have the gray/white wire for the rear fog lights...

1 Replies

496 Views

Last post by ZsZ
08 Jan 2023, 11:35
What does a flickering battery warning light mean

Last post by mioba « 22 Dec 2022, 21:02
Replies: 10
by wbmkk » 21 Dec 2022, 07:45

As the title says ..

I've recently got a new battery and this morning the van started without problems.

Normally as soon as I pick up revs. the...

10 Replies

1465 Views

Last post by mioba
22 Dec 2022, 21:02
Engine battery drain?

Last post by Simon Baxter « 14 Dec 2022, 12:39
Replies: 19
by Bison535 » 01 Dec 2022, 04:35
1

2
1990 VW T25 Vanagon Campervan 1.9 TCD

My fully charged engine battery ‘drains’ over a period of 4-5 days whilst parked !?! The battery becomes too...
19 Replies

2347 Views

Last post by Simon Baxter
14 Dec 2022, 12:39
LED Headlight options

Last post by Stesaw « 12 Dec 2022, 14:17
Replies: 17
by rollercoaster » 07 Dec 2022, 00:02
1

2
No doubt there are various sellers and styles to choose from,
but could we share some wisdom and experience here.

I am open minded about wether to...
17 Replies

3101 Views

Last post by Stesaw
12 Dec 2022, 14:17
automatic multi-stage battery charger

Last post by carthago ian « 12 Dec 2022, 10:22
Replies: 5
by carthago ian » 09 Dec 2022, 20:28

Hi all
I've had a ElecSol model ABC-1210M for some time and it recently went on fire! I'm looking for a replacement and wonder if anyone has any...

5 Replies

933 Views

Last post by carthago ian
12 Dec 2022, 10:22
looking for a decent battery .. 1989 Turbo Diesel

Last post by mioba « 10 Dec 2022, 17:37
Replies: 8
by wbmkk » 08 Dec 2022, 21:46

My current battery is about 5 years old but this evening it let me down .. leaving me stranded at the local supermarket (wife wasn't too pleased...

8 Replies

1846 Views

Last post by mioba
10 Dec 2022, 17:37
Dashpod lights fault

Last post by southernscouse « 09 Dec 2022, 17:00
Replies: 3
by mariner » 29 Nov 2022, 17:33

Evening all. The lights for my speedo and fuel gauge, plus for the heater are failing to work when the engine is on. When I stop and turn the key to...

3 Replies

651 Views

Last post by southernscouse
09 Dec 2022, 17:00
Odometer/trip issues

Last post by sauce1001 « 03 Dec 2022, 12:33
Replies: 2
by sauce1001 » 03 Dec 2022, 11:09

Hi all, looking for some help with a small problem. When I'm driving the van, the odometer and trip readouts don't move. Also the trip reset button...

2 Replies

647 Views

Last post by sauce1001
03 Dec 2022, 12:33

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