What are you looking for and what are you trying to achieve ?
Pauly,
Thanks for your help with this one . . .
I'm looking for a way of identifying the coupling points in my 6.1 - in order to achieve the retro fitting of a rear screen heater and a rear wiper.
Why? Because after my rear windows shattered (overnight, while the van was parked off road with the back against a wall, . . . another story!), Autoglass replaced the old one (which had no wiper or heating elements) with one that did. Not my choice, that's the one they brought along. So, as I had previously retro fitted a reversing camera (which actually works!), I thought, that was fun, let's see if I can get the rear wiper and the heated screen going.
I've run the wiring from the back of the van up to behind the dash, including the rear wash pipe - which needs to go through the bulkhead and down to the washer pump (which I need to replace with the double one - but that's the easy bit).
Now it's a matter of getting the right hand stalk to push forward to allow the existing contacts and wiring operate the rear wiper and washer. I think I can do that bit. I've also bought a 30amp relay, ready to wire in the rear window heater. The normally inoperable push button above the heating controls which would operate the rear demister can be made operable by filing off the stop tabs in the switch, as I've discovered that the contacts are also there on the PCB!
So, I'm trying to trace the wiring in relation to the downloaded PDFs to see, for example, where the existing wiring, coming out of the air conditioning controls unit, (yellow and black wires coming from pins 5 & 6 on the T20 connector - see attached) which is already installed, goes to. In this example, the wiring diagram show the yellow and black going to the TCPM, the 'Coupling point on the dash panel, centre' - but where is that coupling point?
If I can find it, I can see whether the other side of that coupling has the two wires already going to the 'Onboard Supply Control Unit' and if so, it'd be relatively simple to connect the relay to get the rear demister operation!
I realise that the van's brain might eventually need tweaking, via VCDS, but I do have a cable and an account, so that bit's covered.
Sorry about the ramble, but it's my (very amateurish) way of working through the problem.
Your comments, as always, are eagerly anticipated!
Thanks,
J
