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25 Pair
4 Pair
3 Pair
2 Pair
Row
Pair
Colors
Colors
Colors
Colors
1
1
White/Blue
White/Blue
White/Blue
White/Blue
2
Blue/White
Blue/White
Blue/White
Blue/White
1
1
1
3
2
White/Orange
White/Orange
White/Orange
White/Orange
4
Orange/White
Orange/White
Orange/White
Orange/White
5
3
White/Green
White/Green
White/Green
White/Blue
6
Green/White
Green/White
Green/White
Blue/White
2
7
4
White/Brown
White/Brown
White/Blue
White/Orange
8
Brown/White
Brown/White
Blue/White
Orange/White
2
9
5
White/Slate
White/Blue
White/Orange
White/Blue
10
Slate/White
Blue/White
Orange/White
Blue/White
2
3
11
6
Red/Blue
White/Orange
White/Green
White/Orange
12
Blue/Red
Orange/White
Green/White
Orange/White
13
7
Red/Orange
White/Green
White/Blue
White/Blue
14
Orange/Red
Green/White
Blue/White
Blue/White
3
4
15
8
Red/Green
White/Brown
White/Orange
White/Orange
16
Green/Red
Brown/White
Orange/White
Orange/White
17
9
Red/Brown
White/Blue
White/Green
White/Blue
18
Brown/Red
Blue/White
Green/White
Blue/White
3
5
19
10
Red/Slate
White/Orange
White/Blue
White/Orange
20
Slate/Red
Orange/White
Blue/White
Orange/White
21
11
Black/Blue
White/Green
White/Orange
White/Blue
4
22
Blue/Black
Green/White
Orange/White
Blue/White
6
23
12
Black/Orange
White/Brown
White/Green
White/Orange
24
Orange/Black
Brown/White
Green/White
Orange/White
25
13
Black/Green
White/Blue
White/Blue
White/Blue
26
Green/Black
Blue/White
Blue/White
Blue/White
7
4
5
27
14
Black/Brown
White/Orange
White/Orange
White/Orange
28
Brown/Black
Orange/White
Orange/White
Orange/White
29
15
Black/Slate
White/Green
White/Green
White/Blue
30
Slate/Black
Green/White
Green/White
Blue/White
8
31
16
Yellow/Blue
White/Brown
White/Blue
White/Orange
32
Blue/Yellow
Brown/White
Blue/White
Orange/White
6
33
17
Yellow/Orange
White/Blue
White/Orange
White/Blue
34
Orange/Yellow
Blue/White
Orange/White
Blue/White
9
35
18
Yellow/Green
White/Orange
White/Green
White/Orange
5
36
Green/Yellow
Orange/White
Green/White
Orange/White
37
19
Yel/Brown
White/Green
White/Blue
White/Blue
38
Brown/Yellow
Green/White
Blue/White
Blue/White
10
7
39
20
Yellow/Slate
White/Brown
White/Orange
White/Orange
40
Slate/Yellow
Brown/White
Orange/White
Orange/White
41
21
Violet/Blue
White/Blue
White/Green
White/Blue
42
Blue/Violet
Blue/White
Green/White
Blue/White
6
11
43
22
Violet/Orange
White/Orange
White/Blue
White/Orange
44
Orange/Violet
Orange/White
Blue/White
Orange/White
45
23
Violet/Green
White/Green
8
White/Orange
White/Blue
46
Green/Violet
Green/White
Orange/White
Blue/White
12
47
24
Violet/Brown
White/Brown
White/Green
White/Orange
48
Brown/Violet
Brown/White
Green/White
Orange/White
49
25
Violet/Slate
50
Slate/Violet
FIGURE 7.9
Various wiring color codes for the 66 block. Patterns for the 110 block are the same.
Both offer equivalent functionality to the 110 system and significant advan-
tages over the older 66 system.
BIX Connecting Blocks.
The NORDX/CDT BIX system is very similar in concept
to the 110 system, with a dual-sided 50-clip connector wafer that mounts horizon-
