NOTE:  "X" = grounded.  Pins 12,16,23,29 are jumpered to ground.

Channel	Pin 25	Pin  24	Pin  17	Pin  13
1	X	X	X	X
2	X	X	X
3	X	X		X
4	X	X
5	X		X	X
6	X		X
7	X			X
8	X
9		X	X	X
10		X	X
11		X		X
12		X
13			X	X
14			X
15				X
16