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Cat5/Telco/RJ45 Wire Colors & Codes Reference

Wire Color Codes

Standard Quad-Wire
Color codes
Pair 1 T
R
Green
Red
Pair 2 T
R
Black
Yellow
NOTE:Presented for historical reasons-
nobody uses quad wire anymore.

Standard 4-Pair Wiring
Color codes
Pair 1 T
R
White/Blue
Blue/White
Pair 2 T
R
White/Orange
Orange/White
Pair 3 T
R
White/Green
Green/White
Pair 4 T
R
White/Brown
Brown/White
NOTE:For 6-wire jacks use pair 1, 2 and 3 color codes.
For 4-wire jacks use pair 1 and 2 color codes.

Jack Lead Colors

Jack Lead Colors
Pin # Jack Type
8P8C/
8P8C Keyed
6P6C MMJ Cat5
1 Blue(L) White(W) Orange(O) Orange/White (O/W)
2 Orange(O) Black(B) Green(G) Orange(O)
3 Black(B) Red(R) Red(R) Green/White (G/W)
4 Red(R) Green(G) Yellow(Y) Blue(L)
5 Green(G) Yellow(Y) Black(B) Blue/White(L/W)
6 Yellow(Y) Blue(L) Brown(N) Green(G)
7 Brown(N) - - Brown/White(N/W)
8 White(W) - - Brown(N)

Peet Bros. Ultimeter II

Cat5 - RJ45 DB9m (Tinytrak II) DB9f (Computer)
1 Blue
2 Orange 2 3
3 Black 5 5
4 Red
5 Green 3 2
6 Yellow
7 Brown
8 White


RJ11 0.1" Rain Guage
1 Yellow Left Side of Reed 1" Switch (Normally Open)
2 White Left Side of Reed 1" Switch (Normally Open)
3 Black Right Side of Reed 1" Switch (Normally Open)
4 Red Right Side of Reed 1" Switch (Normally Open)


RJ11 Temperature Sensor
1 White(W) -
2 Black(B) Ground
3 Red(R) N/C
4 Green(G) Output
5 Yellow(Y) N/C
6 Blue(L) -


RJ11 Wind Sensor
1 White(W) N/C
2 Black(B) Ground
3 Red(R) N/C
4 Green(G) Output
5 Yellow(Y) +5 volts
6 Blue(L) Special

Note: Peet Brothers web page describes RJ11 to DB9/25 connections but they reference the the wiring backwards.

TH-D7A

2.5mm
Stereo
Plug
Cat5 - RJ45
DB9f (to Computer) DB9m (to GPS II+)
1
Blue
2
Orange
Ring
3 - TxD
Black
3 2
Tip
4 - RxD
Red
2 3
5
Green
Sleeve
6 - Ground
Yellow
5 5
7
Brown
8
White


Cisco Console Cable DB9 - Cat5

DB9 Cat5 - RJ45
1-N/C Green 5
2 Black 3
3 Yellow 6
4 Brown 7
5 Red 4
6 Orange 2
7 White 8
8 Blue 1

Cat5 - RJ45 DB9
1 Blue 8
2 Orange 6
3 Black 2
4 Red 5
5 Green N/C
6 Yellow 3
7 Brown 4
8 White 7

Null Modem

DB9 Cat5 - RJ45
1-N/C Green 5
2 Yellow 6
3 Black 3
4 Orange 2
5 Red 4
6 Brown 7
7 Blue 1
8 White 8

Cat5 - RJ45 DB9
1 Blue 8
2 Orange 6
3 Black 3
4 Red 5
5 Green N/C
6 Yellow 2
7 Brown 4
8 White 7

Serial Cable

DB9 Cat5 - RJ45 DB25
1-N/C Green 5 Green 8
2 Black 3 Black 3
3 Yellow 6 Yellow 2
4 Brown 7 Brown 20
5 Red 4 Red 7
6 Orange 2 Orange 6
7 White 8 White 4
8 Blue 1 Blue 5
9 22

APC Smart Cable DB9f - Cat5

DB9 Color Function Cat5 - RJ45
2 Blue TxD 1
3 Brown RxD 7
5 Yellow Gnd 6
FG Black Frame Ground 3

#1 (I don't remember what this is but don't want to trash it.)

DB9 Cat5 - RJ45
1-N/C Red 4
2 Green 5
3 Blue 1
4 Brown 7
5 Yellow 6
6 Orange 2
7 Black 3
8 White 8

Cat5 - RJ45 DB9
1 Blue 3
2 Orange 6
3 Black 7
4 Red 1
5 Green 2
6 Yellow 5
7 Brown 4
8 White 8

Digitraveler GPS

Cat5 - RJ45 DB9m (Tinytrak II) DB9f (Computer)
1 Blue
2 Orange
3 - TxD Black 3 2
4 - RxD Red 2 3
5 Green
6 - Ground Yellow 5 5
7 Brown
8 White

La Crosse WX station
serial pinout

RJ11 La Crosse Supplied Cable Standard flat phone cord DB9f
(to Computer)
3 - Ground Blue Black 5
4 - TxD Brown Red 2
5 - RdD Green Green 3
6 - DTR White Yellow 4

 

RS-232

DB-9M   Function
1
DCD
Data Carrier Detect
2
RD
Receive Data
3
SD
Transmit Data
4
DTR
Data Terminal Ready
5
SG
Signal Ground
6
DSR
Data Set Ready
7
RTS
Request toSend
8
CTS
Clear to Send
9
RI
Ring Indicator

 

Last modified: Friday, November 19, 2010
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