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Best practices for multi-destination connections

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donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Wed Jun 19, 2013 6:20 am Post subject: Best practices for multi-destination connections

I've got my (previously discussed) annunicator panel figured out. Now I'm trying to determine the best way to connect all the different sensors, switches and devices back to the panel. So far, I've come up with a few options:



1) Hardwire everything to the annunicator panel.

2) A single DB-25 which is then split out to all the different destinations.

3) A Molex connectors for each destination.

4) Inline PIDG connectors for each wire.

5) Hardmounted terminals (spade or screw) on the annunicator with PIDG connectors for each wire.



Any opinions on which one would be best? Or suggestions for an alternative?



Thanks,

Don

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dave.saylor.aircrafters(a
Guest

Posted: Wed Jun 19, 2013 2:02 pm Post subject: Best practices for multi-destination connections

Machined pins by themselves, without a DB housing, make handy, very small, removable butt connectors.  A piece of tight heat shrink will hold the whole thing together.  Good or bad, the entire connection disappears in a wire bundle, it's so slim.

   



Also, I recently did an install that needed power to 5 or 6 engine sensors.  The sensors are all very low current and fed from a single wire out of the engine monitor, so I used Bob's DB ground block philosophy in reverse:  I soldered the wire from the engine monitor to the back terminals of the DB sockets, then distributed that power to the various sensors through the other half of the DB connector.  I used the plastic body of the connector to insulate the whole thing.

   Dave Saylor

[url=tel:831-750-0284]831-750-0284[/url] CL

 



On Wed, Jun 19, 2013 at 8:24 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

   [quote]--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>

    

 At 09:20 AM 6/19/2013, you wrote:

  	  Quote: 	
		   --> AeroElectric-List message posted by: "donjohnston" <don(at)numa.aero (don(at)numa.aero)>

 

 I've got my (previously discussed) annunicator panel figured out. Now I'm trying to determine the best way to connect all the different sensors, switches and devices back to the panel. So far, I've come up with a few options:

    

 1) Hardwire everything to the annunicator panel.

 2) A single DB-25 which is then split out to all the different destinations.

 3) A Molex connectors for each destination.

 4) Inline PIDG connectors for each wire.

 5) Hardmounted terminals (spade or screw) on the annunicator with PIDG connectors for each wire.

 

 Any opinions on which one would be best? Or suggestions for an alternative?

 	
 

   You're discovering that a small fraction of the

   effort is to make it work, the largest fraction

   is package and install it.

 

   In my personal experience . . . anything you can do

   through a d-sub connector with machined pins

   is of good value. For bringing flying leads together,

   the PIDG knife-splice under heat-shrink is an

   efficient, cost effective joining compatible with

   common tools. Molex connectors are at the bottom

   of the barrel for choices . . . bulky and they

   use b-crimps which are not 'bad' but not the

   best we know how to do.

 

 

 

   Bob . . . 

 

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