Here's my 2nd flavor of reboxing the MM485 firing module. (I was lazy and took the pictures with my phone, so the quality is not the best.)
I used an Ace Heavy Duty centronics cable instead of the Salzman style connectors. Unfortunately, it's not easy to mount a female centronics connector on a case like this, so I went ghetto style and just have the cable coming out of the back. It will work for this unit, but if I make another, I'm going to try to get a female plug.
I brought the cable in from the back/bottom into the piece of wood. I drilled holes in the wood to allow the cables to come out on each side. I used some heat shrink tubing to group the wires to keep them organized.
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Here's the back side. I'd rather have a female plug mounted on the case that the centronics cable would plug into.
It's harder to store/transport the case with a cable hanging out of it.
To avoid the extra battery connection, I added a small 12V SLA battery.