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Can not figure out how to wire it so ac works i have only 4 wires coming out of wall blue red white and yellow

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Here is a general wiring solution:

Red is hot on a 24 v system, Red goes to "r" on thermostat
White is heat, goes to "w" on the thermostat
Yellow is aircond and goes to "y" on thermostat
Blue is fan and goes to "g" on thermostat

* note: this is typical and could not be 100% sure without pictures of the unit

Posted on Apr 11, 2011

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Need wire color diagram


Black = AC hot
Red = switched AC hot
Yellow = AC hot from a another source - another control panel as an example.
White = neutral
red w/white tracer = switched neutral
Green or green w/ yellow tracer = ground/earth ground
blue = DC voltage, ie, 12vdc, 24vdc
white w/blue tracer = dc common
Brown = AC 3 pahse - phase A
Orange = AC 3 pahse - phase B
Yellow = AC 3 Phase - phase C
shileds: think of current loops
2 cond
clear or red = +
black = -(neg)
3 cond
red = power (24vdc typically for transducers)
clear = + (signal output)
black = - (signal common)
Hope this helps, oh, and any panel I have design and wired this way is easily understaood by 99% of all service and electrical people I have worked with.

Apr 15, 2015 | Cars & Trucks

1 Answer

I have a general lee cb with a 4-pin standard mic. the wires in my mic cord broke at the plug. does wnyone know how to wire this type of mic back and what color wires go to the correct pin?there are 6...


Here are the Pin outs for different mics that will work with your radio. If a wire is not listed then you cut it off. It's best to keep the wires as short as possible no longer than a half inch is suggested. Normally the Cobra pin out is standard for most radios.

Stock - 1- Shield (Ground) 2- Yellow (Audio) 3- Red (Transmit) 4- White (Receive)

Astatic - (4 wire) 1- Shield 2- White 3- Red 4- Black

Astatic - (6 wire) 1- Shield & Blue 2- White 3- Red 4- Black Yellow NC

Daiwa EM-500, Cobra, CA Series - 1- Shield & Black 2- Red 3- White 4- Blue

Galaxy DC-521S - (4 wire) 1- Shield 2- Yellow 3- Red 4- Black

Galaxy CB-660EI - 1- Shield & Black 2- White 3- Red 4- Blue

Sadelta - 1- Shield 2- White 3- Brown 4- Green

Turner - 1- Shield & Red 2- White 3- Blue 4- Black Yellow NC

Jul 12, 2011 | Magnum DeltaForce CB Radio

1 Answer

I need the wiring for the mic


Hello,
Here is the wire diagram for several common mics in relation to a 4 pin CB. Most recent 4 pin CB's such as Midland, Cobra, Connex, Uniden, etc can use 4 pin mics. The wiring is actually depending on the mic rather than the CB so long as the CB's are 4 pin as well. Once you go back to late 80's the 4 pin design was a little different. Anything new it is simpler.
Stock Mic 1- Shield (Ground) 2- Yellow (Audio) 3- Red (Transmit) 4- White (Receive)
Astatic - 4 wire 1- Shield 2- White 3- Red 4- Black
static - 6 wire 1- Shield & Blue 2- White 3- Red 4- Black Yellow NC

Daiwa EM-500 Cobra CA Series 1- Shield & Black 2- Red 3- White 4- Blue
Galaxy DC-521S - 4 wire 1- Shield 2- Yellow 3- Red 4- Black
Galaxy CB-660EI 1- Shield & Black 2- White 3- Red 4- Blue
Sadelta 1- Shield 2- White 3- Brown 4- Green
Turner RK56 Road King 1- Shield & Red 2- White 3- Blue 4- Black Yellow NC
Regards, Tony

Apr 07, 2011 | Connex Radio Communications

1 Answer

I am wiring a honeywell thermostat model number ct87n if I select fan on the fan runs when out on auto /heat nothing but if I put on auto / cool and adjust the dial to a low setting the hea comes on....


there is it all depends on how many strands of wire are in there, they start at 2 wire and go to i think 8 wire and maybe more.
The wires are as follows:
1. red = power to stat.
2. green = fan control
3. blue or yellow = ac
4. white = heat
w1 = 1st. stage heat
w2 = 2nd. stage heat.
i am on line if you have any questions. wally

Feb 22, 2011 | Honeywell CT87B ROUND HEATING&COOLING...

2 Answers

I have a cat5e wall plate(tph552) a cat5e wire4 colors don't match and 4 colors do ( brown,orange,blue,green,) are ok then wire has 4 that are white with (brown,orange,green,blue,)stripe. and wall plate...


The wires/colors in a category 5e cable run in pairs. They should be tightly twisted together, mostly white with a blue tracer. mostly blue with a white tracer- mostly white with an orange tracer- mostly orange with a white tracer, mostly white with a green tracer- mostly green with a whte tracer, and mostly white with a brown tracer- mostly brown with a white tracer.The jack you have sounds like a standard telephone or cat. 3 jack. If the jack is being used for a standard telephone line, you'll need to connect one of the wire pairs(usually the white/blue pair) to the green and red terminals on the jack.Make sure that the same pair is also terminated at the main telephone junction.

Aug 08, 2010 | RCA Computers & Internet

1 Answer

Thermostat Wiring Problems!!!


. your blue is probably common and if you hooked it to Y you shorted the transformer or blew the low voltage fuse. Green is fan, yellow is AC, Red is 24volt. Is it a heatpump or just ac? I think its probably a heat pump and your brown is your Reversing valve it needs to be hooked to O on the new stat. If its a heatpump your tstat must be a 2heat 1 cool stat w/ aux heat. Without knowing what terminals the wire were hooked to on the old stat you may have to look at whats hooked up at airhandler( furnace) and on A/C (heatpump) tobe able to determine what goes where on the new one.

Sep 20, 2009 | Heating & Cooling

2 Answers

Wiring on a RCA RJ-45 wall jack


the RJ45 wallplate is not meant for ethernet. It's an 8P8C connector for a phone. Will it work as a network jack? Maybe. I wouldn't use it, but if you really want to try, wire it thusly:

1 Blue --- Orange/White
2 Orange --- Orange
3 Black --- Green/White
4 Red --- Blue
5 Green --- Blue/White
6 Yellow --- Green
7 Brown --- Brown/White
8 White --- Brown

I'd still recommend a CAT5 wallplate with a CAT5 jack.

Apr 11, 2009 | Computers & Internet

2 Answers

Plymouth voyager


Hi Marlon,

Not a whole I can do to help. What I can do is refer you to go get a Chilton, or Haynes manual thac voers your Plymouth Voyager. They have schematics with wire colors labeled.You will have a good shot at figuring out which wire is which.

Nov 24, 2007 | Car Audio & Video

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