The breather heaters I have seen were 'stand alone' .......in other words,
just added on.
They're connected to the black '15' wire going to the coil I believe.
they can be retrofitted to any waterboxer engine easily.

thanks for your diligent work here and posting of pictures.

Scott

----- Original Message -----
From: "Alistair Bell" <albell@SHAW.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, November 02, 2011 8:19 PM
Subject: Re: D15 connector revealed

Mark Drillock has outlined the VW mess with this connector a few times. Gets
a little muddled with '86 vans, changes part way through the year. But it
seems there was a retrofit of sorts to add the crankcase breather heater
onto the same circuit. The vin of my van indicates early part of year, and
bentley for it shows no crankcase breather heater at all. But I do have one,
I can see it :) So I assume it might be a retrofit or a bentley mistake.

If you look at the various years in the bible, err, bentley, you can see the
changes in the various things D15 supplies.

I think in all vans however, D23 (the bigger sized molex plug) is free and
is on same panel circuit as D15, so a swap over to that connection is a
solution.

alistair

On 2011-11-02, at 7:27 PM, Phil Zimmerman wrote:

> On Wed, 2 Nov 2011 11:08:38 -0700, Alistair Bell <albell@SHAW.CA> wrote:
>
>> Due to the no start situation I had yesterday, I pulled the fuse panel
>> and had a look at the
> D15 connector. Pics and some text here
>>
>> http://shufti.wordpress.com/2011/11/02/vanagon-d15-connector-issue/
>>
>> spoiler: the connector showed signs of overheating.
>>
>> alistair
> ------------
>
> When observing burnt positive connections on anything Vanagon related;
> I wonder what ground(s) were adding to the impedance that caused the
> heating?
>
> Hmmmmmmm.
> Back to the Bentley schematic.
>
> Pz