Hi Steve and everyone else,

Here's a email from Mark Drillock dated 6/30/10 pertaining to the
Grey/White wire:

That wire is NOT used. It was part of the main harness because VW was
anticipating adding a "check engine" light. The other end of that wire
is in the engine compartment wiring box. You can see it on Bentley page
97.123 where it connects to the Digifant ECU pin 20 and to a dash
MAL-IND light/switch. AFAIK, the dash light/switch was never implemented
though the ECU trouble codes are stored and displayable if the version
type 022D ECU is fitted. Too bad this was never fully supported.

Jimmy
Wilmington, NC

On Sun, May 22, 2016 at 11:19 PM, Steve Williams <
steve@williamsitconsulting.com> wrote:

> Hi,
>
> <posted on FB as well>
>
> I've got a Canadian 1991 Westy with daytime running lights.
>
> Several years ago I installed the headlight relay kit following the
> instructions and not really understanding what was being done. I sat
> down with the Bentley this rainy afternoon, took my fuse panel off the
> firewall & sat down to truly understand. It all made sense until I
> disconnected both relays and STILL had low beams.
>
> It took a while, but I finallyhad an epiphany and realized the wiring
> diagram in the Bentley didn't take into consideration the fact my van
> (Canadian requirement?) has daytime running lights.
>
> Does anyone have any references how the DRL's are wired? It does seem to
> not run the low beam filament at the same power (voltage) as when the
> headlights are turned on, but that might be just because the DRL's
> aren't running through a relay & the low beams are.
>
> Also, I found a Grey/White wire with a yellow connector loose behind the
> fuse panel. It doesn't seem to have a mate anywhere to connect it to.
> From my reading of the wiring diagram, I think it's the T1o on page
> 97.205 of the Bently. It's just hanging in space in the Bently, so I
> guess it's OK to hang in space on my vehicle? It connects to the
> Digifant Control Unit so that really made me kind of curious...
>
>
> Cheers,
> Steve W.
>