NOTE:  "X" = grounded.  Pins 16,23,29 are jumpered to ground.
Channel Pin 12 Pin 25 Pin  24 Pin  17 Pin  13
1 X X X X X
2 X X X X
3 X X X X
4 X X X
5 X X X X
6 X X X
7 X X X
8 X X
9 X X X X
10 X X X
11 X X X
12 X X
13 X X X
14 X X
15 X X
16 X
17 X X X X
18 X X X
19 X X X
20 X X
21 X X X
22 X X
23 X X
24 X
25 X X X
26 X X
27 X X
28 X
29 X X
30 X
31 X
32