What's this Connector?

[Paul Hovnanian P.E.]

I posted some photos on alt.binaries.schematics.electronic.

There are two of them on a '79 Porsche 928 Central Warning Computer.

My CWC is starting to get a little flakey. It monitors numerous analog
inputs, including various lamp currents and illuminates the central
warning idiot light as needed. Mine is starting to generate phantom
alerts. Based on the make (Porsche) and age, a replacement is probably
going to be expensive, so I'm going to attemt to roll my own. Partly for
the fun of it as well.

--
Paul Hovnanian mailtoaul@Hovnanian.com
------------------------------------------------------------------
All those who believe in psychokinesis raise my hand.

 

[Jim Thompson]

On Wed, 30 Mar 2005 13:41:46 -0800, "Paul Hovnanian P.E."
<Paul@Hovnanian.com> wrote:

I posted some photos on alt.binaries.schematics.electronic.

There are two of them on a '79 Porsche 928 Central Warning Computer.

My CWC is starting to get a little flakey. It monitors numerous analog
inputs, including various lamp currents and illuminates the central
warning idiot light as needed. Mine is starting to generate phantom
alerts. Based on the make (Porsche) and age, a replacement is probably
going to be expensive, so I'm going to attemt to roll my own. Partly for
the fun of it as well.

Well, Paul, You know the standard answer on s.e.d, use a PIC ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Keith Williams]

In article <6i2m41pe90ru1b4ki7dde509ur3qv301r2@4ax.com>,
thegreatone@example.com says...

On Wed, 30 Mar 2005 13:41:46 -0800, "Paul Hovnanian P.E."
Paul@Hovnanian.com> wrote:

I posted some photos on alt.binaries.schematics.electronic.

There are two of them on a '79 Porsche 928 Central Warning Computer.

My CWC is starting to get a little flakey. It monitors numerous analog
inputs, including various lamp currents and illuminates the central
warning idiot light as needed. Mine is starting to generate phantom
alerts. Based on the make (Porsche) and age, a replacement is probably
going to be expensive, so I'm going to attemt to roll my own. Partly for
the fun of it as well.

Well, Paul, You know the standard answer on s.e.d, use a PIC ;-)

....or a 555. (or was that last year's solution?)

--
Keith

 

[Joerg]

Hello Paul,

I posted some photos on alt.binaries.schematics.electronic.

This post didn't seem to propagate into the Pacbell server so I can't
see it. But I see mainly two options:

Get connectors in better shape or maybe even a whole CWC from a salvage
yard.

Contact distributors in Germany who might have such connectors. Example:

http://www.deltrona.de/

Or look closely whether there is a logo from Panduit, T&B, AMP or
whatever somewhere on the shells or inserts. This might require a really
strong light. Finding ever so faint logos has helped me more than once.

Another thing I found when driving a really old Ford Cortina in the UK
was that some receptacles need a slight bending inwards to create a
stronger contact force. Else I'd still sit on the road to Durness ;-)

Regards, Joerg

http://www.analogconsultants.com

 

[Paul Hovnanian P.E.]

Jim Thompson wrote:

On Wed, 30 Mar 2005 13:41:46 -0800, "Paul Hovnanian P.E."
Paul@Hovnanian.com> wrote:

I posted some photos on alt.binaries.schematics.electronic.

There are two of them on a '79 Porsche 928 Central Warning Computer.

My CWC is starting to get a little flakey. It monitors numerous analog
inputs, including various lamp currents and illuminates the central
warning idiot light as needed. Mine is starting to generate phantom
alerts. Based on the make (Porsche) and age, a replacement is probably
going to be expensive, so I'm going to attemt to roll my own. Partly for
the fun of it as well.

Well, Paul, You know the standard answer on s.e.d, use a PIC ;-)

No smiley needed. That's what I had in mind.

I can get better data from the analog inputs to identify intermittents,
bad input data from transducers that have gone t/u and log events with
time stamps.

--
Paul Hovnanian mailtoaul@Hovnanian.com
------------------------------------------------------------------
Plaese porrf raed befre postng.

 

[Michael A. Terrell]

Jim Thompson wrote:

Well, Paul, You know the standard answer on s.e.d, use a PIC ;-)

Jim Thompson

When the PIC fails its time to get out the 20 Lb sledge. ;-)

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

 

In sci.electronics.design Paul Hovnanian P.E. <Paul@hovnanian.com> wrote:

Mine is starting to generate phantom alerts.

Ah, just bypass it. All you really _need_ is the oil pressure light and
the generator light...

Based on the make (Porsche) and age, a replacement is probably going
to be expensive,

I would agree. I googled for a 928 central warning computer and found
an interesting site that supplies 928 parts. I especially like the
brake light switch for $28. The reason I like it is that it's a VW
part number for the very same switch that any VW aftermarket shop will
sell you for $4.

so I'm going to attemt to roll my own.

The prongs look like standard 1/4" push-on connectors. The cheap way
would be to use a bunch of individual 1/4" connectors crimped to
discrete wires. A slightly more elegant way might be to make a small
circuit board and use PC-mountable male push-ons. Plug the board
into the female connector in the harness and put a couple of zip ties
around the assembly to hold it together.

Matt Roberds