I recall someone looking for this information.
Finally found the box buried in the back room, sorry it took so long.
Impulse Firecracker24 pass through cable pinouts
23 pin D female to 15 pin D male
23 / 15
1-7
2-6
8-5
9-4
10-3
11-2
12-1
16-13
17-12
18-11
19-10
20-9
22-8
23-14
