Between myself and more knowledgable people on this list, it was
determined that power from the alternator blue wire was looping back
into the + side of the relay coil via the 15 wire to the (dash lights?
No Bentley in front of me) But here's the kicker:

if I pulled the hand brake on, the engine stopped!

Seems the addition of the e-brake light drew enough current to allow
the relay to open.

This was repeatable but usually only happened when the engine was warm.

Neil.

On Thu, Jan 24, 2013 at 8:43 PM, David Beierl <dbeierl@attglobal.net> wrote:
> At 11:27 PM 1/24/2013, neil n wrote:
>>
>> So my idea is a kludge or the switch design itself?   I get the
>> feeling it's the former.    ;^)
>
>
> The switch.  The rest of it is quite reasonable, and always uses the big 30
> terminal to make and break live contact.
>
>
>
>> At one point I'd wired in a relay to be triggered by 15 so it would
>> carry power to the ECU and coil. But then there were times when the
>> engine wouldn't shut down unless the hand brake was engaged.
>
>
> Uh...why?
>
> d
>
>

--
Neil n

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