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

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Last post

Dash woes... Hardwired to self destruct

Last post by crazyhorse « 01 Dec 2022, 15:01
Replies: 3
by crazyhorse » 28 Nov 2022, 21:10

Hi all,

Hope everyone is well, I am having some problems with my hardwired dashboard.

Its like the one on the wiki made by midlifecrisis a few...

3 Replies

2026 Views

Last post by crazyhorse
01 Dec 2022, 15:01
MV Airo Heater not warming up

Last post by middyuk « 29 Nov 2022, 21:02
Replies: 8
by middyuk » 25 Sep 2022, 08:49

Hi

Newbie here. Our van has one of these heaters. The control panel works fine I can set the heat to come on/change the temperature, but it’s just...

8 Replies

1008 Views

Last post by middyuk
29 Nov 2022, 21:02
Replacement Leisure Battery

Last post by keynsham1 « 29 Nov 2022, 10:06
Replies: 4
by keynsham1 » 28 Nov 2022, 17:58

I need a new leisure battery fro my van. It is a 1.9DG and the leisure battery sits under the passenger seat. It is 175mm wide, 175mm tall and...

4 Replies

880 Views

Last post by keynsham1
29 Nov 2022, 10:06
Golf Headlight Switch

Last post by steveo9007 « 27 Nov 2022, 13:15
Replies: 2
by steveo9007 » 27 Nov 2022, 13:00

So this has been a job i have had on my list for a while and now i have completed it, i used information from Syncro Sports website to complete this...

2 Replies

719 Views

Last post by steveo9007
27 Nov 2022, 13:15
Alternator Question

Last post by Cecil « 25 Nov 2022, 19:49
Replies: 11
by steveo9007 » 25 Nov 2022, 15:04

Ok, so every time i start my van and the voltage is low the Alternator squeals until it goes pass 14 volts or there about, my engine is the 1.7...

11 Replies

1497 Views

Last post by Cecil
25 Nov 2022, 19:49
Dash 14 pin connector

Last post by slowcoach « 25 Nov 2022, 17:14
Replies: 9
by steveo9007 » 22 Nov 2022, 21:06

Just throwing this out there but has any ever done an upgrade to the dash 14 pin connector and replaced it with any other connector like maybe a...

9 Replies

1305 Views

Last post by slowcoach
25 Nov 2022, 17:14
Starter motor

Last post by Jeff J « 24 Nov 2022, 16:21
Replies: 16
by Jeff J » 22 Nov 2022, 15:46
1

2
There seems to be a vast difference in the price of starter motors for my camper. Are the cheaper ones (flea bay ) worth buying. Offering a 5 year...
16 Replies

1685 Views

Last post by Jeff J
24 Nov 2022, 16:21
All sorts of strangeness going on after dropped live wire to stereo

Last post by Robsey « 23 Nov 2022, 22:57
Replies: 8
by joker83 » 22 Nov 2022, 11:13

I was trying to replace the stereo on my T25 1983 Club Joker and dropped the live wire which shorted something.

Now when I have the ignition and...

8 Replies

890 Views

Last post by Robsey
23 Nov 2022, 22:57
Labcraft control unit problem t25 autosleeper

Last post by steveo9007 « 23 Nov 2022, 21:03
Replies: 1
by mike2drummond » 01 Nov 2022, 16:40

I am trying to understand an issue I am having with the control unit on my vw t25 1987 1.9 dg engine. It is an auto sleeper conversion with a...

1 Replies

518 Views

Last post by steveo9007
23 Nov 2022, 21:03
'Fan belts'required

Last post by mioba « 21 Nov 2022, 20:50
Replies: 11
by wbmkk » 20 Sep 2022, 16:57

My battery warning light was showing, so I charged the battery, assuming that was the problem.

I was going to test the voltage but a friend (a...

11 Replies

1151 Views

Last post by mioba
21 Nov 2022, 20:50
Oil Pressure Sensor Adaptor

Last post by maxstu « 14 Nov 2022, 16:02
Replies: 10
by maxstu » 13 Nov 2022, 17:36

Is this the correct one? NPT 1/8 ? Yet the external threaded part looks slightly tapered in the photos?
I have an extention oil pipe to fit in the...

10 Replies

1191 Views

Last post by maxstu
14 Nov 2022, 16:02
Oil temp gauge reading incorrect

Last post by Shinnster « 14 Nov 2022, 00:51
Replies: 2
by Shinnster » 11 Nov 2022, 16:16

Hi all,

I had some oil temp and oil pressure gauges installed a few months back and the oil temp has always been an issue.
First of all the company...

2 Replies

530 Views

Last post by Shinnster
14 Nov 2022, 00:51
Brake lights late to come on..

Last post by slowcoach « 13 Nov 2022, 18:20
Replies: 20
by slowcoach » 31 Oct 2022, 10:52
1

2
Hi,

My brake lights having begun to come on only with much bigger pressure to the pedal. Ive a third brake light so i can see from inside when they...
20 Replies

4225 Views

Last post by slowcoach
13 Nov 2022, 18:20
Instrument unit

Last post by Robsey « 12 Nov 2022, 23:14
Replies: 25
by johnwayne » 10 Apr 2021, 18:22
1

2
Is it possible to replace the whole instrument unit in one go? My (Analogue) clock doesn't work, the temp/coolant indicator either doesn't have its...
25 Replies

5338 Views

Last post by Robsey
12 Nov 2022, 23:14
Can the ignition control unit be tested?

Last post by simonmarsh « 02 Nov 2022, 11:41
Replies: 8
by simonmarsh » 20 Sep 2022, 08:24

Hello all,
I have no spark and have checked connections to the coil etc - I will be checking the coil this evening - could anyone let me know if the...

8 Replies

1171 Views

Last post by simonmarsh
02 Nov 2022, 11:41
battery being drained

Last post by Smiffo « 01 Nov 2022, 21:52
Replies: 32
by Shinnster » 20 Sep 2022, 17:16
1

2

3
hi again,

I have an issue with my van where if its parked up the battery drains in about 4 days, to the point where it doesnt even power on any dash...
32 Replies

4082 Views

Last post by Smiffo
01 Nov 2022, 21:52
Main beam issue

Last post by AngeloEvs « 01 Nov 2022, 10:08
Replies: 7
by leigh24577 » 25 Oct 2022, 22:51

Hi all,

1st post but long time lurker on this site. :?

I have a 1980 2l van and have an issue with the main beam....when I activate it through the...

7 Replies

1155 Views

Last post by AngeloEvs
01 Nov 2022, 10:08
Changing female power inlet

Last post by middyuk « 29 Oct 2022, 20:40
Replies: 11
by middyuk » 23 Oct 2022, 19:45

Hi

My t25 has a female 230/240 power inlet and I want to change it to a male fitting so it will fit my electric hook up lead. Any advice? Links to...

11 Replies

1284 Views

Last post by middyuk
29 Oct 2022, 20:40
Battery terminal connectors

Last post by JeffRoo « 22 Oct 2022, 21:08
Replies: 6
by JeffRoo » 22 Oct 2022, 07:32

Thought these look good,
has anyone had any experience? Just thinking of using them due to number of connections coming off the batteries

6 Replies

722 Views

Last post by JeffRoo
22 Oct 2022, 21:08
Fuel gauge sender OHMs

Last post by weimarbus « 27 Sep 2022, 20:23
Replies: 2
by weimarbus » 27 Sep 2022, 11:39

I have the fuel tank out at the moment due to the gauge not functioning fully. Do any of you helpful people know the ohms range for the tank sender...

2 Replies

485 Views

Last post by weimarbus
27 Sep 2022, 20:23
Leisure battery problem

Last post by Robsey « 11 Sep 2022, 14:28
Replies: 13
by cicciopasticcio » 28 Aug 2022, 19:55

Hi guys, I have a problem with the leisure battery of my just bought T3 Westfalia. When I bought it the panel above the fridge marked as low, then in...

13 Replies

1228 Views

Last post by Robsey
11 Sep 2022, 14:28
Handbrake Warning Pin-Out.

Last post by Robsey « 10 Sep 2022, 09:28
Replies: 5
by Robsey » 16 Apr 2022, 12:08

This is a bit of a baffler for me.

I have a 1982 van with no handbrake warning lamp.

I have updated the looms on the van to 1987 specification,...

5 Replies

799 Views

Last post by Robsey
10 Sep 2022, 09:28
Three pin VW connector Male

Last post by maxstu « 08 Sep 2022, 14:16
Replies: 4
by maxstu » 07 Sep 2022, 13:58

Wanted opposite genuine VW connector to this. The male three pins with wiring tails so l can connect wires to it.

Regards
Stuart 07961 423324

4 Replies

703 Views

Last post by maxstu
08 Sep 2022, 14:16
JP group replacement CE1 fuse box - Anyone used one?

Last post by cobblers « 07 Sep 2022, 14:44
Replies: 2
by cobblers » 04 Sep 2022, 13:20

My fuse box isn't the best, the fuse terminals for my rear blower are pretty scorched and it needs the fuse fettling pretty often to keep it going....

2 Replies

483 Views

Last post by cobblers
07 Sep 2022, 14:44
New starter motor

Last post by 69gp225 « 06 Sep 2022, 21:06
Replies: 3
by 69gp225 » 06 Sep 2022, 19:06

Ok, so tested the starter motor and looks like it’s shot.
Don’t want to spent large amounts of cash on a Bosch unit as I’m going to sell it soon.

My...

3 Replies

566 Views

Last post by 69gp225
06 Sep 2022, 21:06
These cables?

Last post by Africatwin « 04 Sep 2022, 17:15
Replies: 7
by Africatwin » 03 Sep 2022, 19:53

Just finishing another job and I was putting the door card back on and found these stuffed behind the membrane… I know it’s not for the electric...

7 Replies

806 Views

Last post by Africatwin
04 Sep 2022, 17:15
Idle controller box (Ahead of D/S rear light cluster)

Last post by Robsey « 02 Sep 2022, 18:13
Replies: 6
by Mr Bean » 31 Aug 2022, 16:40

I have locate one to buy but the relevent number is on the one I have is 251 907 393C whereas the one for sale has a D in place of the C.
I am lead...

6 Replies

842 Views

Last post by Robsey
02 Sep 2022, 18:13
Factory rev counter question.

Last post by AngeloEvs « 02 Sep 2022, 07:37
Replies: 22
by Africatwin » 21 Aug 2022, 17:40
1

2
Hi all.

I’ve had a quick search in the forum to see if can find the answer but unsuccessful…

In a nut shell I have a 92 2.1 Multivan and the...
22 Replies

1992 Views

Last post by AngeloEvs
02 Sep 2022, 07:37
Fresh air blower replacement

Last post by what2do « 30 Aug 2022, 02:01
Replies: 20
by Bison535 » 23 Jun 2022, 17:54
1

2
Hi All, my T25 1990 Fresh air blower decided after 30 plus years to turn into smoke along with the 3 speed switch (what a stink !!!)
So, where is the...
20 Replies

3107 Views

Last post by what2do
30 Aug 2022, 02:01
Headlight/front end loom

Last post by Robsey « 29 Aug 2022, 21:21
Replies: 9
by ELVIS » 21 Aug 2022, 14:22

Not the horrendous ones that have numerous variations of cheapness on usual sites but OE ones!

Has anyone completes remade the front end lighting...

9 Replies

1127 Views

Last post by Robsey
29 Aug 2022, 21:21
Black box wiring help

Last post by Robsey « 29 Aug 2022, 09:50
Replies: 5
by SeanMc1970b » 28 Aug 2022, 10:05

Could someone point me in the rigt direction for finding out which wire is which.

From the black box and into the engine area I have....

Red wire...

5 Replies

672 Views

Last post by Robsey
29 Aug 2022, 09:50
Another horn problem AAz.1,9TD

Last post by jacko1967 « 26 Aug 2022, 13:02
Replies: 9
by jacko1967 » 22 Aug 2022, 15:02

Hi all I've looked through the old posts about horn problem,s to no avail.
mines working fine when used normally but it also goes off when turning...

9 Replies

1007 Views

Last post by jacko1967
26 Aug 2022, 13:02
No Power To Coil

Last post by Epiphone « 25 Aug 2022, 14:07
Replies: 42
by Leeham » 04 Jun 2018, 10:49
1

2

3
Hi all loooking for some help with our petrol 1989 T25 Hitop 1900cc watercooled camper :)

Problem is there is no 12v going to the coil. Have been...
42 Replies

13078 Views

Last post by Epiphone
25 Aug 2022, 14:07
Correct battery

Last post by ash1293 « 24 Aug 2022, 06:50
Replies: 3
by 69gp225 » 22 Aug 2022, 22:26

Hello, I have an 84 Devon t25 running standard equipment. I want to replace the battery for running the vehicle. Had a splitter installed to keep the...

3 Replies

589 Views

Last post by ash1293
24 Aug 2022, 06:50
HELP!! Fitting a 1.9 WBX in place of a 2.1WBX !!!!!!!!

Last post by Robsey « 22 Aug 2022, 22:20
Replies: 25
by 89 Transporter » 28 Sep 2017, 10:16
1

2
Here's a good one for you, firstly, I'm in Aus, so engines are like hens teeth here!
I bought an 89 T25 minus its 2.1 engine, more recently i bought...
25 Replies

7391 Views

Last post by Robsey
22 Aug 2022, 22:20
Radiator fan is it two speed?

Last post by Robsey « 19 Aug 2022, 12:46
Replies: 15
by Stirls2 » 17 Aug 2022, 15:08
1

2
I was checking out the cooling fan on my '89 1.6 TD as it sounds really noisy when it does turn on, the radiator switch has 3 terminals live, and...
15 Replies

1600 Views

Last post by Robsey
19 Aug 2022, 12:46
Temperature Gauge issues

Last post by jamie.smith « 17 Aug 2022, 12:56
Replies: 10
by jamie.smith » 18 Jul 2022, 16:29

I have recently replaced the ageing dash ribbon with a Slaughterhouse Customs PCB unit, in the hope that it would fix an issue with the temp gauge....

10 Replies

1299 Views

Last post by jamie.smith
17 Aug 2022, 12:56
Starter Motor Bush Replacement

Last post by maxstu « 10 Aug 2022, 14:54
Replies: 1
by keynsham1 » 05 Aug 2022, 19:46

Simple question... Can a worn starter motor bush (The one in the bell housing) cause a new starter motor to jam?

1 Replies

431 Views

Last post by maxstu
10 Aug 2022, 14:54
Electric fuel pump wiring (Novice alert!)

Last post by Epiphone « 08 Aug 2022, 16:50
Replies: 118
by nehpets13 » 25 Jul 2013, 11:07
1

…

4

5

6

7

8
Hi all,

Fitting an electric fuel pump to mu 2.0 Aircooled and pretty much know where to fit etc

But! Wiring says to wire to oil pressure switch...
118 Replies

60749 Views

Last post by Epiphone
08 Aug 2022, 16:50
ZIG DCU/3 on a Legend GL

Last post by R0B « 06 Aug 2022, 17:52
Replies: 1
by notalegend » 06 Aug 2022, 17:01

Hi all,

Just purchased a Legend GL autosleeper from 1992 with pretty minimal instructions attached, so I come to you with an extremely basic...

1 Replies

409 Views

Last post by R0B
06 Aug 2022, 17:52
Can't find that fuse! - cigarette lighter

Last post by 4gearwonder « 02 Aug 2022, 20:15
Replies: 19
by 4gearwonder » 29 Jul 2022, 16:19
1

2
Hi all. Any help with this would be much appreciated as running out places to look now! - have been on Wiki/Haynes manual and another VW van site....
19 Replies

2447 Views

Last post by 4gearwonder
02 Aug 2022, 20:15
Oil Temp and pressure gauge issues

Last post by Shinnster « 01 Aug 2022, 20:11
Replies: 7
by Shinnster » 07 Jul 2022, 13:27

Hi all

I've had an oil pressure gauge and oil temp gauge fitted but they don't seem to function correctly.
the oil temp never moves and the pressure...

7 Replies

1182 Views

Last post by Shinnster
01 Aug 2022, 20:11
Oil Dashboard Light

Last post by pbar « 27 Jul 2022, 20:54
Replies: 4
by pbar » 27 Jul 2022, 19:09

Am I right in thinking that the oil light on the dash should illuminate when the key is in the second position then go out when the van is started?...

4 Replies

564 Views

Last post by pbar
27 Jul 2022, 20:54
Heater Control Cable

Last post by pbar « 27 Jul 2022, 19:45
Replies: 2
by pbar » 27 Jul 2022, 19:11

I need to change the heater cable, the one which actually provides the heat, i.e. the middle slider control cable. Is this a straightforward job, or...

2 Replies

413 Views

Last post by pbar
27 Jul 2022, 19:45
Overheating

Last post by aec « 27 Jul 2022, 11:38
Replies: 2
by Mawsy » 26 Jul 2022, 17:36

Hi all,after a really rotten 2 years finally got out in my 1.9 automatic type 25, drove from Castletown to South Shields,approx 6 miles, temperature...

2 Replies

510 Views

Last post by aec
27 Jul 2022, 11:38
Zig unit/ invertor

Last post by grayzer1 « 26 Jul 2022, 13:42

by grayzer1 » 26 Jul 2022, 13:42

Hi can anyone help I'm a bit thick when it comes to electricity! I've got a cf6 zig unit im my holdsworth and an invertor which is has 2 plug sockets...

0 Replies

1679 Views

Last post by grayzer1
26 Jul 2022, 13:42
i think my blower is dead, please tell me it isnt

Last post by ZsZ « 26 Jul 2022, 13:13
Replies: 12
by tlg » 09 Mar 2022, 19:59

i recently changed the bulb on the heater panel. in doing so there was some fiddling and prodding with wires.

Since this the 20a fuse keeps blowing...

12 Replies

1560 Views

Last post by ZsZ
26 Jul 2022, 13:13
Side lights staying on

Last post by Ernest Dyer « 26 Jul 2022, 11:26
Replies: 23
by Ernest Dyer » 19 Jul 2022, 07:43
1

2
Hi all

I have a rather puzzling issue.
My rear sidelights stay on all the time even when the switch on the dashboard is off.
When it is on both the...
23 Replies

2240 Views

Last post by Ernest Dyer
26 Jul 2022, 11:26
Manifold pre heating,

Last post by DoubleOSeven « 26 Jul 2022, 08:54
Replies: 1
by escovedo » 26 Jul 2022, 07:47

Just converting 2.1 mv van to carb and am unsure
of the wiring needed for the manifold heating etc
and the carb cut off switch.
Would appreciate any...

1 Replies

369 Views

Last post by DoubleOSeven
26 Jul 2022, 08:54
Dash flexible PCB replacement, my own design

Last post by JamesT25 « 24 Jul 2022, 18:57
Replies: 5
by JamesT25 » 16 Jul 2022, 18:38

My dash was doing weird stuff which led me down a rabbit Warren.......

I first looked at swapping some components but not many were available. Then...

5 Replies

1024 Views

Last post by JamesT25
24 Jul 2022, 18:57

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