Here are a selection of useful PDFs related to the T25/T3:
Workshop Manuals

Source: syncro.org

VW Transporter 1980 > Diesel injection and glow plug system

Pierburg Carburettor
- VW Transporter 1980 > 34 PICT, Pierburg 2E3, 2E4 carburettor/ignition system (1.9 litre engine)
- Pierburg 2E3: Maintenance and Repair
- Pierburg 2E3: Adjustments and Setup V0.1 (by CJH)
- Bromyard Instructions: Fitment and Adjustments
Propex Heater
Wiring Diagrams
The following wiring diagrams are available on Syncrosport:
- Second Battery, cut-out relay
- Water Heater BBW46/DBW46
- 1.6l CS, KY and JX diesel engines
- 1.9l SP and DG petrol engines
- 2.1l SR, SS and MV petrol engines
- Turbodiesel coolant pump
- Turbodiesel, turbocharger cooling fan
- ABS with 4WD (Syncro)
- Central Locking
- 2.1l DJ petrol engine
- Great Britain Lighting
- Westfalia Joker & Club Joker
- Daylight driving lights and headlight washer (Sweden & Norway only)
Washer Jet Upgrade Kit
Help support this blog by buying a washer jet upgrade kit from me. You will receive a kit of tried and tested high quality jets.
All proceeds go towards the website costs, funds parts for future videos and sourcing new workshop manuals to scan and make available in this section.

Front Washer Jet Kit

Front and Rear Washer Jet Kit
Flat fee £2 worldwide postage and packaging

“Big difference”
What a great upgrade James! Such a big difference. The single nozzle is just so inadequate!
Slim
“Easy to fit”
Just wanted to say thanks for the windscreen washer jets. Really easy to fit and made a massive difference.
Mike
“Fantastic quality”
Thank you for sending these so quickly. Fantastic quality, much better than the originals.
Paul