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  #1  
Old 02-26-2013, 08:05 AM
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Mike D Mike D is offline
 
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Default Standard wire color code?

Is there a standard wire color code? I know red = power and black = ground. But beyond this, is there a best practice or standard?

Searched the site, and there was a mention of Stein's code in an article of kitplanes. Does anyone have the info or a link to the article?.
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  #2  
Old 02-26-2013, 08:36 AM
Sid Lambert Sid Lambert is offline
 
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Most people just use the white Tefzel wire and label it.

Are you building or debugging?
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  #3  
Old 02-26-2013, 08:43 AM
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Found the below here:

http://www.eaa.org/experimenter/arti...aft_wiring.pdf

Color Meaning
Yellow Power (ships power)
Red Power (device power)
Black Return
Blue Signal
Green Signal
White Signal
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  #4  
Old 02-26-2013, 09:03 AM
pvalovich pvalovich is offline
 
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Default Wire Color

I used mostly white wire. If I had to do it again I'd use colored wire and code each circuit. Really hard to keep track of all those white wires.

Doesn't matter how you color-code it as long as you document what you did.
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  #5  
Old 02-26-2013, 09:13 AM
Rupester Rupester is offline
 
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Default My own color code ...

I decided early on I would follow the convention of red=power, black (or green) =ground, but I would also color code the other wires consistently, i.e. in a way that enabled troubleshooting later. For no particular reason, I used yellow for the three strobe power packs (from the switch), red for nav lights from the switch, white for taxi/landing lights, etc. The color code was primarily for wiring to the wings and tailcone, though it carries thru to the toggles in the panel. All power from the busses to switches is red, all grounds are black. I actually ended up with very few white wires.
The downside was the planning necessary to order correct wire quantities in the various colors. Arghhh.
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  #6  
Old 02-26-2013, 09:27 AM
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Similiar to Terry, I used red for power, black for ground, and white for data.

I think it helps for troubleshooting and helps prevent from hooking up a power source to the wrong pin.

It does require a little more planning to ensure you have enough of the correct color, length, and guage.

bob
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  #7  
Old 02-26-2013, 10:17 AM
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Mike S Mike S is offline
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Another common thing is to use a color --- lets say blue, and a blue with tracer when wiring up things that take a pair of wires. Audio comes to mind, but there are a lot others.

For things that take a three wire setup, color, white tracer, black tracer. Trim motor control or feedback pot for instance.
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  #8  
Old 02-26-2013, 11:03 AM
Ken Martin Ken Martin is offline
 
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You can certainly choose your own preference as this is the Experimental Category. For most everything, I still refer to the original accepted aviation standard practice source. FAA AC43.13-1b

http://rgl.faa.gov/Regulatory_and_Gu...apter%2011.pdf

Regards,

Ken
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  #9  
Old 02-26-2013, 11:38 AM
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DaleB DaleB is offline
 
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Quote:
Originally Posted by Ken Martin View Post
You can certainly choose your own preference as this is the Experimental Category. For most everything, I still refer to the original accepted aviation standard practice source. FAA AC43.13-1b

http://rgl.faa.gov/Regulatory_and_Gu...apter%2011.pdf
... which (please correct me if I'm wrong) refers one to MIL-C-27500, which specifies two completely different color codes, both of which apply to multi-conductor cables. For single wires, white is specified. The nice thing about standards is that there are so many from which to choose!
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  #10  
Old 02-26-2013, 01:26 PM
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Ironflight Ironflight is offline
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Here's the problem with deciding to go with a consistent color code - once you go that way, you are all in, which means that you probably can't use a premade harness for your autopilot, EFIS, etc....they might very well have their own code, and then you'll have multiple color meanings within the airplane. I pretty much stick with white wires for avionics harness, although I might use red for power and black for ground as well. There isn't anything wrong with color coding, but if you want the whole airplane to be the same, t is a lot of work, so be prepared...

Paul
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