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

How do I know if I have an early/late fuse box

Last post by Cataldoodledoo « 21 Mar 2021, 16:05
Replies: 6
by Cataldoodledoo » 19 Mar 2021, 21:29

Trying to work this out and also find a wiring diagram for the one I have. What’s the easiest way? It’s a 1985 VW T25. Thanks.

6 Replies

1912 Views

Last post by Cataldoodledoo
21 Mar 2021, 16:05
ZIG Controller Upgrade

Last post by Mocki « 20 Mar 2021, 12:34
Replies: 1
by keynsham1 » 20 Mar 2021, 10:38

I am looking at upgrading my electrics to use either a Zig CF9 or CF10. They are both pretty similar. I can understand the wiring but it isn't clear...

1 Replies

677 Views

Last post by Mocki
20 Mar 2021, 12:34
Temp gauge sender - linear resistance?

Last post by WillScott « 19 Mar 2021, 20:33
Replies: 6
by T25Convert » 30 Mar 2020, 19:06

New temperature gauge sender fitted to 1.9wbx. Black square plug one identical to the one on there.

However, temperature gauge now sits at 3/4...

6 Replies

2421 Views

Last post by WillScott
19 Mar 2021, 20:33
Extra wires in the head-light loom

Last post by Robsey « 18 Mar 2021, 22:12
Replies: 8
by Robsey » 18 Mar 2021, 11:52

Hi all,

I am a firm believer of no question is a stupid question, but here 'should' be a simple question.

If you have read my other posts, you will...

8 Replies

989 Views

Last post by Robsey
18 Mar 2021, 22:12
Butt connectors

Last post by Rosie n' Jim « 17 Mar 2021, 18:45
Replies: 9
by kentishvanman » 15 Mar 2021, 20:15

Hi,
Have used these from time to time on vehicle wiring but never thought of using on domestic/household cables ie up to about 5amp.
Has anyone used...

9 Replies

1973 Views

Last post by Rosie n' Jim
17 Mar 2021, 18:45
Non VW. Any electricians or people in the know

Last post by Aidan « 17 Mar 2021, 09:03
Replies: 5
by RCN » 16 Mar 2021, 14:59

Hi all. Can anyone tell me about this please. Viewing a property and this is the fuse box. It seems to have fuse wire and there's a mention of...

5 Replies

1723 Views

Last post by Aidan
17 Mar 2021, 09:03
Indication problems

Last post by T25_Baloo « 14 Mar 2021, 10:54
Replies: 5
by T25_Baloo » 07 Mar 2021, 14:30

Not had much luck today.

The passenger side indicator stopped working so I got a new bulb from Halfords and tried to fit it. When I did so I...

5 Replies

871 Views

Last post by T25_Baloo
14 Mar 2021, 10:54
Interior LED lighting

Last post by AngeloEvs « 13 Mar 2021, 17:53
Replies: 2
by keynsham1 » 13 Mar 2021, 16:28

I am sure this has been asked before but I am looking for advice on interior LED lighting for my van. I have stripped the interior out as I am doing...

2 Replies

524 Views

Last post by AngeloEvs
13 Mar 2021, 17:53
Handbrake/brake fluid warning light

Last post by Cataldoodledoo « 12 Mar 2021, 20:35
Replies: 4
by Cataldoodledoo » 08 Mar 2021, 12:44

Hi everyone. I have stripped my cab out and found that the handbrake warning light was not connected to the dash, the cable was stuffed under the...

4 Replies

916 Views

Last post by Cataldoodledoo
12 Mar 2021, 20:35
1988 1.9TD AAz blowing heater 20 amp fuse

Last post by Schnippzle « 12 Mar 2021, 18:26
Replies: 5
by jacko1967 » 05 Mar 2021, 12:46

Hi I got in the van today and put the front heater knob to number three and Hurd a click and nothing from the heater blower checked the fuse and sure...

5 Replies

705 Views

Last post by Schnippzle
12 Mar 2021, 18:26
Temperature gauge light.

Last post by garyharbord « 11 Mar 2021, 08:48
Replies: 7
by garyharbord » 07 Mar 2021, 22:04

My Temperature gauge light is permanently on and only goes off when the Headlights are switched on . I guess its a wiring problem anyone point me in...

7 Replies

1511 Views

Last post by garyharbord
11 Mar 2021, 08:48
Aftermarket VW Three Pin Connectors

Last post by maxstu « 09 Mar 2021, 20:30

by maxstu » 09 Mar 2021, 20:30

Seeking the male and female three round pin VW connectors. Or equivalent aftermarket. Must be compatible with genuine VW connectors
Brickwerk out of...

0 Replies

3660 Views

Last post by maxstu
09 Mar 2021, 20:30
Domestic Wiring

Last post by Cecil « 08 Mar 2021, 16:46
Replies: 5
by maxstu » 07 Mar 2021, 20:07

Would someone please explain in simple terms what this means below; DNO, TNS, UKPN, SPD etc?

Also the C2's are:

R emedial action...

5 Replies

673 Views

Last post by Cecil
08 Mar 2021, 16:46
Electrics.....??

Last post by ScienceBoy « 01 Mar 2021, 23:41
Replies: 13
by randamonia » 30 Jan 2021, 17:42

Hi

Hoping someone with much more knowledge can educate me please?
I noticed a fuse off my leisure battery had had some heat to the point of melting...

13 Replies

3268 Views

Last post by ScienceBoy
01 Mar 2021, 23:41
Engine bay remote starter switch

Last post by Mocki « 28 Feb 2021, 11:43
Replies: 16
by alan.lane3 » 23 Apr 2016, 20:17
1

2
Today i had a problem with my ignition.
I needed a helper to turn the key whilst i worked out what was wrong.
I didn't have a helper so I made an...
16 Replies

5491 Views

Last post by Mocki
28 Feb 2021, 11:43
Starter motor/electrics?

Last post by ScienceBoy « 27 Feb 2021, 21:47
Replies: 23
by sneakyalien » 09 Jun 2018, 18:27
1

2
Hia all,
I Picked my van (T25 1.9 petrol high top)up from the repair guy(new mot, new fuel pipes,dash off for new blower etc) on the way home I...
23 Replies

5568 Views

Last post by ScienceBoy
27 Feb 2021, 21:47
Non VW. Domestic 12v lighting

Last post by maxstu « 19 Feb 2021, 18:50
Replies: 19
by maxstu » 07 Feb 2021, 12:38
1

2
Spot lights in the kitchen are 12v. Hot and costly to run.
My questions are...
Are they connected to a transformer?
Is a transformer needed to run...
19 Replies

2689 Views

Last post by maxstu
19 Feb 2021, 18:50
Wiper headlight issues!

Last post by Danskip77 « 17 Feb 2021, 15:32
Replies: 6
by Danskip77 » 05 Feb 2021, 20:09

Good evening all, hope everyone's well. I have a 85 t25,and jusr had a new gremlin pop up. When I have ignition on, headlamps and wipers are fine. As...

6 Replies

793 Views

Last post by Danskip77
17 Feb 2021, 15:32
rear heater fan

Last post by davidoft1 « 10 Feb 2021, 13:30
Replies: 6
by fh9977 » 09 Feb 2021, 14:00

Hi - is the fan in the rear heater under bench seat meant to move freely when you spin it? Mine is stuck, when I switched the heater on the other day...

6 Replies

822 Views

Last post by davidoft1
10 Feb 2021, 13:30
Alternator light staying on....?

Last post by spanishfly « 09 Feb 2021, 20:28

by spanishfly » 09 Feb 2021, 20:28

WBX 2.1dj 90A alternator,the light is staying on after I fitted a used replacement. The previous ones bearings have just become very noisy so swapped...

0 Replies

3511 Views

Last post by spanishfly
09 Feb 2021, 20:28
Square Headlight Conversion Kit

Last post by james309 « 08 Feb 2021, 21:34
Replies: 1
by keynsham1 » 08 Feb 2021, 10:51

Has anyone bought and fitted the Type 25 Square Headlight Conversion Kit (UK Beam Pattern) which is sold by Cool Air Volkswagen Specialists? I like...

1 Replies

493 Views

Last post by james309
08 Feb 2021, 21:34
Cab light

Last post by TONYT25T25 « 07 Feb 2021, 18:30
Replies: 14
by mariner » 21 Jan 2021, 21:12

Hi all. I have one cab light in my ‘85 panel conversion that is above the driver’s door. Does anyone know if this is meant to come on when I open the...

14 Replies

1936 Views

Last post by TONYT25T25
07 Feb 2021, 18:30
Cruise Control stalk

Last post by maxstu « 05 Feb 2021, 15:43
Replies: 12
by maxstu » 29 Jan 2021, 22:46

Im attempting to fuse (ha!) together a part original VW Cruise Control unit and pump to a Subaru Forester stalk and a separate Subaru ON/OFF switch....

12 Replies

1240 Views

Last post by maxstu
05 Feb 2021, 15:43
Alternator

Last post by Mocki « 01 Feb 2021, 22:13
Replies: 4
by benbee » 01 Feb 2021, 18:44

I have a 1989 2.1 DJ and am confused about the correct Alternator. Should it be a 65 or a 90 amp? Thanks

4 Replies

771 Views

Last post by Mocki
01 Feb 2021, 22:13
Hazard light switch

Last post by Mocki « 01 Feb 2021, 22:12
Replies: 1
by mshaw1980 » 01 Feb 2021, 22:04

Anyone had this where you activate the hazard lights but only the driver side indicators flash?
Indicators all work as they should. Is this a common...

1 Replies

827 Views

Last post by Mocki
01 Feb 2021, 22:12
Heater box refurbishment

Last post by sweetaswesty « 29 Jan 2021, 12:04
Replies: 15
by sweetaswesty » 28 Jan 2021, 19:47
1

2
I’m in the middle of refurbishing the heater box on our Westy. I’ve got the foam kit from Brickwerks, a new blower motor and heater matrix.
Just two...
15 Replies

2631 Views

Last post by sweetaswesty
29 Jan 2021, 12:04
Help identifying a starter motor

Last post by 3cylinders « 27 Jan 2021, 12:16
Replies: 4
by 3cylinders » 26 Jan 2021, 21:55

I am looking to buy an unused starter motor from a private seller for a late 1.9 DG 78 PS manual petrol engine. The flywheel drive pinion spindle...

4 Replies

855 Views

Last post by 3cylinders
27 Jan 2021, 12:16
Problem with Gas/petrol switch

Last post by Daisy « 23 Jan 2021, 18:29
Replies: 4
by Daisy » 22 Jan 2021, 11:14

A duplicate post fro electrical.

Hi folks I went to start my van this morning and it did start and run for a short period and then cut out and is...

4 Replies

1003 Views

Last post by Daisy
23 Jan 2021, 18:29
Running cables to rear view mirror.

Last post by davidoft1 « 17 Jan 2021, 11:56
Replies: 2
by Spailpin Fanach » 17 Jan 2021, 09:37

I have a reversing camera and dashcam I want to wire in on my 1989 Westfalia California poptop. It goes over the rear view mirror. The unit has 3...

2 Replies

699 Views

Last post by davidoft1
17 Jan 2021, 11:56
Fuel tank sender unit differences

Last post by Aidan « 16 Jan 2021, 15:48
Replies: 1
by multisi » 16 Jan 2021, 14:30

There are 2 standard fuel tank senders,one early pre 86 and later post 86, what would the differences be , would the dash reading be out if the wrong...

1 Replies

478 Views

Last post by Aidan
16 Jan 2021, 15:48
Heater Blower Motor Replacement

Last post by Splurt « 13 Jan 2021, 21:17
Replies: 4
by Splurt » 12 Jan 2021, 14:28

My blower motor has been acting up recently, takes some time to get up to full speed and squeals a bit in doing so. It's had too many birthdays so...

4 Replies

2201 Views

Last post by Splurt
13 Jan 2021, 21:17
Bench Testing an Alternator.

Last post by Mocki « 10 Jan 2021, 19:56
Replies: 23
by maxstu » 20 Nov 2020, 23:58
1

2
I have two spare T25 alternators. One is a 90 amps version with a new voltage regulator. The other has lost it's label but is totally identical to...
23 Replies

5295 Views

Last post by Mocki
10 Jan 2021, 19:56
Glow plug wiring woes

Last post by hubcap61 « 08 Jan 2021, 13:07
Replies: 12
by Drawl21 » 07 Jan 2021, 15:49

Good afternoon all
I’ve recently acquired a 1986 16 turbo diesel (JX)camper,the previous owner has wired the glow plugs up to a push button on the...

12 Replies

2397 Views

Last post by hubcap61
08 Jan 2021, 13:07
Buzzer of Doom - again

Last post by ajsimmo « 06 Jan 2021, 08:39
Replies: 6
by Tony Somerset » 04 Jan 2021, 14:37

Hi there. I have a G-reg Autohomes Komet, 1.9 petrol. Last summer I had the buzzer of doom problem, The oil warning light and the buzzer came on and...

6 Replies

1196 Views

Last post by ajsimmo
06 Jan 2021, 08:39
Refitting the speedo cable to the grease cap

Last post by killerme « 03 Jan 2021, 19:52
Replies: 11
by killerme » 21 Dec 2020, 20:23

VW T25 1989 water cooled turbo diesel. I have an old threaded speedometer, that runs through the square hole in the hub grease cap. I've checked all...

11 Replies

29353 Views

Last post by killerme
03 Jan 2021, 19:52
Sliding door switch & interior lighting?

Last post by Timwhy « 03 Jan 2021, 11:14
Replies: 9
by DevonAid » 31 Dec 2020, 18:07

Went mad recently and bought new interior light switches for the cab doors: interior lighting to the cab restored (previous switch cleaning efforts...

9 Replies

1827 Views

Last post by Timwhy
03 Jan 2021, 11:14
Solar on Komet roof?

Last post by randamonia « 02 Jan 2021, 18:03
Replies: 4
by randamonia » 01 Jan 2021, 13:54

Hi

Has anyone fitted a semi-flexible solar panel to a Komet roof? The roof has contours which I am not sure a panel will handle? Any...

4 Replies

974 Views

Last post by randamonia
02 Jan 2021, 18:03
Electrics in the gas locker

Last post by rollercoaster « 01 Jan 2021, 19:58
Replies: 9
by rollercoaster » 30 Dec 2020, 13:38

Just about to put the (mains) electric trip box in the gas locker,
its vented at the bottom to the outside world..
but is this wise, never heard...

9 Replies

3683 Views

Last post by rollercoaster
01 Jan 2021, 19:58
Speedo Calibration woes.

Last post by acebaraka « 01 Jan 2021, 17:49
Replies: 15
by jim4447 » 21 Jul 2020, 09:27
1

2
Hi,
Hope this is the right forum for this query.( Apologies if not )
Just got my speedo back from Germany where I sent it to be calibrated.
It is an...
15 Replies

3834 Views

Last post by acebaraka
01 Jan 2021, 17:49
Access to heater blower switch

Last post by Stesaw « 31 Dec 2020, 16:07
Replies: 1
by Gixerman60 » 31 Dec 2020, 07:11

Once again Haynes is silent on this. Many article suggest removing whole dash! But its so easy to get to. Pull of knob. Prise off the panel with a...

1 Replies

638 Views

Last post by Stesaw
31 Dec 2020, 16:07
Blue main beam tell tale not working.

Last post by Gixerman60 « 31 Dec 2020, 07:16
Replies: 14
by colinlowe » 20 Sep 2020, 16:23

Hi all,
Sorry in advance as I suspect this has been covered somewhere, although I could not find it.
I have a '87 Autosleeper high top 1.9dg.
My...

14 Replies

4456 Views

Last post by Gixerman60
31 Dec 2020, 07:16
Eberspacher D1LCC re-ignition problem.

Last post by davidoft1 « 24 Dec 2020, 13:13
Replies: 11
by Rosie n' Jim » 23 Dec 2020, 17:56

Hi guys.

I bought a second-hand D1LCC compact some time back, and now have it fitted. It has an odd problem I can't figure out. When power is first...

11 Replies

1676 Views

Last post by davidoft1
24 Dec 2020, 13:13
Which coil for a 1.9 dg?

Last post by BackForMore « 21 Dec 2020, 08:52
Replies: 4
by BackForMore » 19 Dec 2020, 17:02

The sticker has rubbed off so I can’t identify which to get as a replacement. Does it matter? Green, grey or the other one?

4 Replies

2693 Views

Last post by BackForMore
21 Dec 2020, 08:52
Temperature gauge not working

Last post by Mocki « 19 Dec 2020, 17:00
Replies: 3
by Ashwood » 18 Dec 2020, 21:49

Hi,

The temperature gauge on my 1990 2.1DJ is not working. I’ve disconnected the sender unit wire and earthed it with the ignition on, but there is...

3 Replies

941 Views

Last post by Mocki
19 Dec 2020, 17:00
Zig cf8 makes clicking noise

Last post by Oldiebut goodie « 18 Dec 2020, 11:17
Replies: 27
by oscarvandriel » 11 Jul 2015, 16:49
1

2
My zig cf8 makes clicking noises when hooked up on 240 mains.
But, when I pull out the 2amp fuse it stops clicking and everything still works fine....
27 Replies

10959 Views

Last post by Oldiebut goodie
18 Dec 2020, 11:17
3 pin plug in engine bay

Last post by R0B « 17 Dec 2020, 23:58
Replies: 3
by 10to4 » 17 Dec 2020, 20:58

There is a covered 3 pin plug in my 2L CU Aircooled engine bay
Any ideas what it is for?

3 Replies

952 Views

Last post by R0B
17 Dec 2020, 23:58
Tacho options for a petrol dash?

Last post by ViktorK « 17 Dec 2020, 22:21
Replies: 243
by CJH » 26 Jun 2018, 12:14
1

…

13

14

15

16

17
I've been looking for an OEM petrol rev counter to replace the time clock in my early dash. I know the loom/PCB is different, but now that I've...
243 Replies

572908 Views

Last post by ViktorK
17 Dec 2020, 22:21
Zig cf8 not charging from 240v

Last post by AngeloEvs « 16 Dec 2020, 13:24
Replies: 7
by InventEd » 06 Sep 2015, 13:23

Hi

2 months into my new T25, after replacing the engine I am now onto sorting the camping electrics. I have been through the system and removed...

7 Replies

3452 Views

Last post by AngeloEvs
16 Dec 2020, 13:24
Starter motor solenoid

Last post by Stesaw « 14 Dec 2020, 18:26
Replies: 11
by Stesaw » 13 Dec 2020, 14:06

Allo chaps is there anyway to get one of these open.
I'd like to fix it as I want to test the engine in the syncro I've picked up. The starter is...

11 Replies

1899 Views

Last post by Stesaw
14 Dec 2020, 18:26
Heated seat thermistor

Last post by ZsZ « 11 Dec 2020, 20:10
Replies: 2
by ZsZ » 11 Dec 2020, 16:03

Hi all!

I am in a project, but stuck at the moment. I want to control cheap chinese heated seat pads with the factory wiring and relay .
In the...

2 Replies

883 Views

Last post by ZsZ
11 Dec 2020, 20:10

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