Mil Spec Wiring Tutorial

[Dr G]

After years of learning this stuff by passage of tribal knowledge, I find this:

http://www.rbracing-rsr.com/wiring_ecu.html

May be of interest to some.

Dr G

[jon72vega]

Thanks for the link.
Excellent!

[Dr G]

It is a decent compilation of knowledge in one place. One issue I have is that the author states that the reason for jacketing (heat shrinking) a wire harness, with shrink boots at the connectors, is for resistance to moisture or liquids. I do not think that is entirely true. I beleive the jacketing is mostly for strain relief and abrasion resistance.

Military aircraft and satellites do not use the heat shrink or shrink boots. The connectors are designed to keep moisture away from the pins and sockets. Here are some pics of wiring on a military helicopter for example:


https://static1.pt-content.com/images/pt/2012/07/mh53jdfst8909541-1.jpg

https://static1.pt-content.com/images/pt/2012/07/MLT53Mwiring-1.jpg

https://static1.pt-content.com/images/pt/2012/07/MLT53Mwiring2-1.jpg

And a picture of some satellite wiring:

https://static1.pt-content.com/images/pt/2012/07/746761172_BQ44pO-1.jpg

What the author does point out is that the heat shrink jacket should be in the largest size that still fits snugly when recovered. That way you get the maximum thickness and less static strain build up due to over stretching the heat shrink. I think this is commonly misunderstood.

Dr G