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

Cruise speed and dots on speedo

Last post by Rosie n' Jim « 27 Jun 2022, 19:49
Replies: 3
by Sammyjim5 » 26 Jun 2022, 22:44

I’ve had my ‘83 1.9 Aircooled T25 for two years. Was wondering what sort of speed is normal for cruising on the motorway. 55-60mph seems comfortable...

3 Replies

592 Views

Last post by Rosie n' Jim
27 Jun 2022, 19:49
Central locking fuse ?

Last post by Bison535 « 23 Jun 2022, 16:36
Replies: 10
by Bison535 » 21 Jun 2022, 13:03

1990 VW T25 - I had problems with Central Locking and found the drivers side (LHD) actuator was seized up ! so, I have fitted a new actuator BUT...

10 Replies

2149 Views

Last post by Bison535
23 Jun 2022, 16:36
B pillar fuse box- no strip lights??

Last post by Robsey « 22 Jun 2022, 12:48
Replies: 8
by Blakefruid » 23 Jul 2019, 23:07

Evening all,
The strip lights in my Westi have stopped working, so I traced the red lighting wire from the mini fuse box on the B pillar and found it...

8 Replies

2396 Views

Last post by Robsey
22 Jun 2022, 12:48
Powerspark 034 SVDA info

Last post by banjax34 « 20 Jun 2022, 19:19

by banjax34 » 20 Jun 2022, 19:19

Anyone using a Powerspark 034 SVDA distributor on a 2.0 L petrol CU engine ? Wondering what timing figures you're using ?

0 Replies

1507 Views

Last post by banjax34
20 Jun 2022, 19:19
Hall Sender Testing

Last post by Robsey « 16 Jun 2022, 22:55
Replies: 8
by Slaydog » 11 Jun 2022, 13:15

Hi, does anyone have a working link to the idiots guide to testing the hall sender? Looking at other posts just return a dead link.

So far I’ve...

8 Replies

874 Views

Last post by Robsey
16 Jun 2022, 22:55
Twin Alternators and fitting leisure battery HELP PLEASE

Last post by welshbird « 16 Jun 2022, 14:42
Replies: 2
by welshbird » 14 Jun 2022, 22:53

Evening all 😁
I would like to fit a leisure battery, inverter etc to have some power available for the odd overnight where no ehu is available but...

2 Replies

457 Views

Last post by welshbird
16 Jun 2022, 14:42
Solar Set Up?

Last post by fresco3000 « 16 Jun 2022, 09:27
Replies: 10
by fresco3000 » 15 Jun 2022, 15:24

I've been thinking of adding solar panels to the roof of my van for a while, not knowing a huge amount about the kit I'd appreciate a bit of advice....

10 Replies

934 Views

Last post by fresco3000
16 Jun 2022, 09:27
Wiring up Victron charger

Last post by sweetaswesty « 15 Jun 2022, 12:20
Replies: 2
by sweetaswesty » 11 Jun 2022, 13:38

I replaced the original Buzzing Black Box charger in our Westfalia with a Victron IP22 12/15/3 using the exact same connections to the starter and...

2 Replies

514 Views

Last post by sweetaswesty
15 Jun 2022, 12:20
RED FLASHING HEATER TEMPERATURE LIGHT

Last post by firetrader « 14 Jun 2022, 12:08
Replies: 10
by firetrader » 03 Jun 2022, 10:17

I have developed an issue on my dash (1985 T25 -1.9 Petrol).Its a red flashing water temp light - checked water levels in radiators - checked blue...

10 Replies

1160 Views

Last post by firetrader
14 Jun 2022, 12:08
Wiki link for the heater blower pwm mod

Last post by Richardspain « 09 Jun 2022, 05:42
Replies: 5
by weimarbus » 03 Dec 2020, 18:17

Hi, as topic, can anyone get the wiki link to work for the pwm heater blower upgrade to work, I was going to recommend this to another member, but...

5 Replies

1172 Views

Last post by Richardspain
09 Jun 2022, 05:42
Leisure battery

Last post by LeeME3 « 08 Jun 2022, 12:55
Replies: 6
by maccast25 » 02 May 2022, 09:16

Hi all
Need a new leisure battery for the compartment under the passenger seat.
What leisure battery are you guy's using that fits under /behind the...

6 Replies

1272 Views

Last post by LeeME3
08 Jun 2022, 12:55
Replacement coil - 5DA 358.057-991

Last post by Aidan « 03 Jun 2022, 11:27
Replies: 1
by Iand73 » 17 May 2022, 15:15

Can someone please advise? I’ve been given the above coil from my local parts store as told it is a direct replacement, it’s a whole heap smaller but...

1 Replies

340 Views

Last post by Aidan
03 Jun 2022, 11:27
Facet fuel pump wiring

Last post by Frostbus « 31 May 2022, 10:47
Replies: 2
by Frostbus » 31 May 2022, 07:22

Changing from mechanical to electric fuel pump on my t25
Pumps mounted in front of tank
I would like to mount the changeover relay iwithin the engine...

2 Replies

494 Views

Last post by Frostbus
31 May 2022, 10:47
Dash red lights

Last post by AngeloEvs « 23 May 2022, 16:32
Replies: 20
by southernscouse » 30 Apr 2022, 11:18
1

2
This is killing me just fitted a slaughterhouse kit as the foil fell apart when I tried to clean the 14wire socket I did this because the fuel and...
20 Replies

1719 Views

Last post by AngeloEvs
23 May 2022, 16:32
New fridge for Westfalia

Last post by uncle monty « 23 May 2022, 09:14
Replies: 3
by uncle monty » 23 May 2022, 06:35

Hi everyone

Just wondering if anyone has tried to wire a smad absorption fridge 3 way

I have a positive and negative on the fridge but a number of...

3 Replies

580 Views

Last post by uncle monty
23 May 2022, 09:14
PCB Replacement Options.

Last post by Oldiebut goodie « 19 May 2022, 22:30
Replies: 13
by djhammy » 10 Nov 2018, 19:48

HI like many of you the printed circuit ribbon for the dash lights has failed and has had it. I have had it bodged up want to get it sorted properly...

13 Replies

3742 Views

Last post by Oldiebut goodie
19 May 2022, 22:30
Intermittent starter issue (pulling my hair out!)

Last post by vandad « 08 May 2022, 19:27
Replies: 5
by Ju73 » 09 Apr 2022, 14:52

Hi all, would love some advice if anyone can offer it. I have had an intermittent starting issue for about a year now. I’ve been trying things step...

5 Replies

810 Views

Last post by vandad
08 May 2022, 19:27
Ignition wire for immobiliser

Last post by pierce « 07 May 2022, 21:36
Replies: 5
by pierce » 07 May 2022, 15:59

I am fitting a new immobiliser (cobra).
It requires an ignition live, so that the immobiliser knows to re-arm when the van isn't running.
The problem...

5 Replies

536 Views

Last post by pierce
07 May 2022, 21:36
Buzzer of doom - confused with it

Last post by ajsimmo « 29 Apr 2022, 14:57
Replies: 9
by Shinnster » 24 Apr 2022, 19:18

Hey all,
Took my van from London to Dubs at the mill this weekend which was a nice 250 + mile round trip. The van ran smooth, no issues really, apart...

9 Replies

875 Views

Last post by ajsimmo
29 Apr 2022, 14:57
Grey for Green?

Last post by ajsimmo « 29 Apr 2022, 14:41
Replies: 22
by SurfT25 » 23 Apr 2022, 20:58
1

2
I believe my green labeled coil is not working correctly. :shock:
Trying to time engine and light gun wasn't flashing regularly. Heard ticking from...
22 Replies

1694 Views

Last post by ajsimmo
29 Apr 2022, 14:41
Strange rear lights problem.

Last post by WILKS « 28 Apr 2022, 18:19
Replies: 3
by alancabriolet » 27 Apr 2022, 01:44

The brake lights and the reversing lights both come on together. I've checked earths and all the contacts on the back of the light clusters and all...

3 Replies

382 Views

Last post by WILKS
28 Apr 2022, 18:19
Finally found Reverse Lights Switch but ... can't budge it! Any ideas???

Last post by Aidan « 27 Apr 2022, 17:56
Replies: 15
by T25Hugh » 24 Apr 2022, 11:59
1

2
After what feels like hours of searching for this flippin' thing (namely: the Reverse Lights Switch - mine's nearer the top of the gearbox than at...
15 Replies

2667 Views

Last post by Aidan
27 Apr 2022, 17:56
Clock swop

Last post by southernscouse « 25 Apr 2022, 10:08
Replies: 4
by southernscouse » 24 Apr 2022, 10:29

Hi my dash foil is kaput so I ordered a slaughterhouse kit I have a spare clock set in a broken housing
My question is since I am using the rewire...

4 Replies

428 Views

Last post by southernscouse
25 Apr 2022, 10:08
Temp Light Flashing - Replace Relay 42 - FIXED?!

Last post by Stesaw « 21 Apr 2022, 14:35
Replies: 12
by bertnuggit » 03 Feb 2019, 19:04

I've been reading the long thread on Coolant temperature gauge - flashing red light+needle swing, but I'm lost!

Relay 42 is mentioned, if I replace...

12 Replies

5454 Views

Last post by Stesaw
21 Apr 2022, 14:35
Auto Electric assistance

Last post by Mocki « 19 Apr 2022, 21:18
Replies: 1
by jamie.smith » 19 Apr 2022, 08:32

Hello, after 3 years of trouble free motoring, I have a few niggling electric issues that I'd like to solve. Was wondering if there is anyone in the...

1 Replies

350 Views

Last post by Mocki
19 Apr 2022, 21:18
Fuel gauge not working

Last post by AngeloEvs « 19 Apr 2022, 14:12
Replies: 3
by Kev.i.n » 18 Apr 2022, 18:50

Hi all, I'm a newbie to the VW t25 life, just purchased Betsy our 1982 air-cooled 2ltr petrol Devon Moonraker! In love with her so far as are the...

3 Replies

397 Views

Last post by AngeloEvs
19 Apr 2022, 14:12
Wiring woes multiple, start somewhere...

Last post by Robsey « 18 Apr 2022, 19:18
Replies: 7
by Paul7502 » 18 Apr 2022, 12:20

Lots of electrical problems and a naff diagram.

mg]

I can't make head nor tail of the diagram, some things are not numbered and some don't match...

7 Replies

537 Views

Last post by Robsey
18 Apr 2022, 19:18
Indicator issue - Arghh

Last post by Robsey « 18 Apr 2022, 19:05
Replies: 8
by Stokie1403 » 10 Apr 2022, 13:02

Hi all,
Firstly, thanks for any help/advice I’m a total novice and learning as I go. However electrical issues have me totally stuck

After getting...

8 Replies

822 Views

Last post by Robsey
18 Apr 2022, 19:05
Leisure Battery Wiring Qs - Wiring routing for Battery under bed

Last post by ManicGTI « 18 Apr 2022, 09:51

by ManicGTI » 18 Apr 2022, 09:51

Apologies if asked before, i've been trawling but can't find much specifics on this.

Van is a twin slider (no full length kitchen), Full width RnR...

0 Replies

1360 Views

Last post by ManicGTI
18 Apr 2022, 09:51
2021 Battery Recomendations Please

Last post by davidoft1 « 18 Apr 2022, 08:53
Replies: 10
by Dreaddybear » 17 Aug 2021, 18:05

Hi All
Im a newbie and just wanted to ask the forums opinion when it comes to Battery recomendations (the battery that starts the vehicle, not the...

10 Replies

2058 Views

Last post by davidoft1
18 Apr 2022, 08:53
2.1 dj high idle .....?

Last post by maxstu « 13 Apr 2022, 19:51
Replies: 4
by spanishfly » 03 Apr 2022, 11:20

I have trawled the wiki/net first feel sure this is something simple.

Van starts first kick idles around 950rpm for about 5 secs then revs to 1700...

4 Replies

517 Views

Last post by maxstu
13 Apr 2022, 19:51
New battery drained to 4.4v in a week

Last post by Samanthington « 13 Apr 2022, 17:09
Replies: 6
by Samanthington » 04 Apr 2022, 17:05

🙄

- Brand new (1.5weeks old 😖) Bosch S4 007 battery from Tayna…chosen after checking out the forums here (thanks Forums!)

- Nothing but the clock...

6 Replies

602 Views

Last post by Samanthington
13 Apr 2022, 17:09
GoWesty PCB Diesel -BoD

Last post by liakos1982 « 13 Apr 2022, 12:23
Replies: 6
by liakos1982 » 12 Apr 2022, 12:54

Hi, I am wondering whether any members have feedback on the GoWesty PCB and the buzzer of doom on Diesel vehicles?

I have a 1987 1.7D, I have been...

6 Replies

533 Views

Last post by liakos1982
13 Apr 2022, 12:23
South African T25 / T3 starting problem

Last post by lexussoarer1996 « 11 Apr 2022, 21:30
Replies: 2
by lexussoarer1996 » 11 Apr 2022, 16:09

Hi , does anybody know where the fuel pump relay is on a 2.5i, after changing the clutch , fuel pump, fuel filter and new injectors it now wont...

2 Replies

377 Views

Last post by lexussoarer1996
11 Apr 2022, 21:30
Solar Panel Controller Connection

Last post by Annieclover « 11 Apr 2022, 04:39
Replies: 18
by keynsham1 » 19 Dec 2021, 12:59
1

2
This might be a daft question but here goes anyway I have just finished rewiring the whole of the 'camper' part of my T25 during it's refurbishment....
18 Replies

2410 Views

Last post by Annieclover
11 Apr 2022, 04:39
External fog light working - can I re-route wire & bulb into cluster

Last post by Aidan « 08 Apr 2022, 19:51
Replies: 2
by Middle29 » 08 Apr 2022, 15:45

Hello all...

I have an external fog light that keeps coming loose. I would like to remove it & wire it into the main lights. LHD. I have a read a...

2 Replies

369 Views

Last post by Aidan
08 Apr 2022, 19:51
"D'oh!"

Last post by ZsZ « 08 Apr 2022, 08:33
Replies: 2
by T25Hugh » 08 Apr 2022, 07:21

Advertised as a size that will fit my under seat compartment. Waited a fortnight for it and ... !!!

2 Replies

348 Views

Last post by ZsZ
08 Apr 2022, 08:33
Maximum Alternator Current - 1989 1.6TD JX

Last post by bigherb « 04 Apr 2022, 21:38
Replies: 3
by Spailpin Fanach » 03 Apr 2022, 08:02

Hi all

Wondering what's the max current for the alternator on my 1989 1.6TD JX Westfalia California poptop van with 5 speed gearbox.

I'm...

3 Replies

563 Views

Last post by bigherb
04 Apr 2022, 21:38
Westfalia Wiring

Last post by irishkeet « 03 Apr 2022, 09:48
Replies: 10
by tlg » 19 Feb 2022, 18:33

Maybe better in the electrics section but thought i'd start here.

Trying to make sense of our california wiring system whilst removing cabinets for...

10 Replies

1404 Views

Last post by irishkeet
03 Apr 2022, 09:48
headlights flickering with no ignition

Last post by AngeloEvs « 29 Mar 2022, 16:36
Replies: 4
by Jimthejock0301 » 29 Mar 2022, 09:52

My T25 headlights are flickering on and off with no ignition also in dash cluster blue headlight led showing i have tried to disconnect main...

4 Replies

457 Views

Last post by AngeloEvs
29 Mar 2022, 16:36
83 Westy split charge

Last post by waltraud « 27 Mar 2022, 21:42
Replies: 2
by waltraud » 27 Mar 2022, 09:22

Can anyone help identify some wires on my 83 West split charge relay. I'm updating it to a slightly more modern replacement with thicker cable. There...

2 Replies

622 Views

Last post by waltraud
27 Mar 2022, 21:42
Cleaning starter motor stator and brushes

Last post by mikeybjettaman « 22 Mar 2022, 10:28
Replies: 5
by mikeybjettaman » 31 May 2018, 07:43

Hi all,
I created a video showing some work I did on my T25 starter motor and I thought I would share it with you.

5 Replies

1777 Views

Last post by mikeybjettaman
22 Mar 2022, 10:28
battery drain on ignition system?

Last post by jigarai « 18 Mar 2022, 21:25
Replies: 15
by jigarai » 14 Feb 2022, 15:35
1

2
Hi folks,

I've got an issues with my cranking battery as follows:

It is quickly flat when I leave the keys in with the ignition on - quickly as in...
15 Replies

2624 Views

Last post by jigarai
18 Mar 2022, 21:25
Installing CRX50 fridge - where do the screws go?

Last post by MidLifeCrisis « 18 Mar 2022, 12:48
Replies: 2
by sweetaswesty » 12 Mar 2022, 12:22

So I'm feeling pretty stupid but in my defence the installation instructions for this expensive fridge are almost non-existent.
I know you have to...

2 Replies

603 Views

Last post by MidLifeCrisis
18 Mar 2022, 12:48
Horn circuit weird fault

Last post by Jay Peg « 15 Mar 2022, 17:36
Replies: 3
by Jay Peg » 09 Mar 2022, 11:49

Hi there,

I have a strange fault on my horn. When I turn the ignition key to on, the horn works after starting the engine and engine is running the...

3 Replies

465 Views

Last post by Jay Peg
15 Mar 2022, 17:36
Fan turning on when battery connected

Last post by Robsey « 15 Mar 2022, 01:50
Replies: 8
by jamesling » 13 Mar 2022, 13:56

Hi all,

Had my van standing for a while and now when I reconnect my battery, the fan instantly goes on and doesn't seem to want to shut off.

Blown...

8 Replies

759 Views

Last post by Robsey
15 Mar 2022, 01:50
Unknown wires

Last post by Vwjue73 « 09 Mar 2022, 13:22
Replies: 2
by Vwjue73 » 09 Mar 2022, 08:52

Hi guys taken my dash out for headlight relay upgrade and found these loose ends anyone know what they are to speakers maybe?2.1 dj caravelle gl Tia

2 Replies

439 Views

Last post by Vwjue73
09 Mar 2022, 13:22
Windscreen washers

Last post by Michael4 « 08 Mar 2022, 08:32
Replies: 2
by Michael4 » 07 Mar 2022, 18:06

Silly but simple question I hope...

What colour is the earth wire for the washer pump? Mine are dodgy again and I've forgotten what I did last time,...

2 Replies

431 Views

Last post by Michael4
08 Mar 2022, 08:32
Oil pressure switch jx diesel

Last post by Stirls2 « 05 Mar 2022, 15:20
Replies: 5
by Stirls2 » 04 Mar 2022, 11:18

Hi guys, the oil pressure switch on my jx td has failed it's a brown switch which seems to be incorrect for that engine as the only ones on the...

5 Replies

1984 Views

Last post by Stirls2
05 Mar 2022, 15:20
RCD not working

Last post by T25boy71 « 28 Feb 2022, 21:16
Replies: 8
by T25boy71 » 26 Feb 2022, 17:05

Hi all
The mains power in my van has stopped working I’ve has a look and I’m thinking it’s the RCD, i going to get a new one but not sure which one...

8 Replies

642 Views

Last post by T25boy71
28 Feb 2022, 21:16

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