Here's an electrical question for ya David.
When fitting a heated oxygen sensor to a vanagon that had just a non-heated
single wire one,
what is the proper place to connect the heater wire to ? - the wire that
will power the heating element in the sensor.

I have my solution, and it's working fine - just wonder what you would
recommend.

Partly why I even thought about this much , is ..........I think it was on
this group - Neil with the ABA 2.0 inline four, powered his off the ignition
circuit, and there was suspicion that that was causing a problem .
thanks,
Scott

----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, September 10, 2009 12:22 PM
Subject: Re: O2 Sensor wire connection (wiring harness end - 2.1)

> At 11:59 AM 9/10/2009, Jeff Lincoln wrote:
>>Greg - Yes knowing which wire is which would be a big help as well. The
>>independent ground is a good idea.
>
> Well, the actual sensor lead is obvious.  For the heater wires,
> Bentley says for example white and brown for '87, red/yellow and
> brown for '90 -- obviously the brown is ground in each case.  But how
> they're connected to the sensor leads makes no difference -- the
> heater isn't grounded to the sensor internally exactly in order to
> keep the ground paths separate.
>
> Am I misunderstanding what you need?
>
> Yours,
> David