air conditioning wiring for VW T4

Wiring for the CUSTOM VW T4 Air Con System | AC series 10

In this video I explain the wiring needed to make the air conditioning work and show how I made up the different wiring connections.

The playlist for this in-depth air con build series is here: https://www.youtube.com/playlist?list=PLZIkKoV1AxLvz7KdXO9Z71hUGN6sYdPf7

The wiring needed that I make in this video:

  • Multi-position switch to AC Unit, with plug for the harness
  • AC Unit to 12v positive and earth
  • AC Unit to Trinary switch
  • Trinary switch to Compressor
  • Compressor to earth.

Parts list can be found here: https://adventures-and-automobiles.com/fitting-air-conditioning-to-a-vw-t4-camper-van/

Tools used:
Crimp pliers: https://amzn.to/3SelY3C
Special Crimp pliers: https://amzn.to/48M6Mjz

Happy days!

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00:01 – All the Air Con parts
00:14 – What wiring is needed where for the AC system
01:00 – Wiring diagram schematic explanation and tips
01:44 – How to wire the multi-postion switch that controls the AC unit
03:30 – Where to get 12v power on the fusebox
05:54 – AC Unit wiring and harness
07:19 – Wiring for the Trinary switch
09:22 – VW T4 under-dash Earth point
10:14 – Trinary switch to Compressor wiring
15:43 – Wiring for AC compressor
18:40 – The last step

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