Hi - thanks for that, it is a Chinese 'copy' of a Peli case, so is fine when clipped shut, but as you say - is a disaster when the lid is open !
I think it would be too much hassle trying to waterproof it - and again as you say - anything that does get in has to get out somehow - so waterproofing it would be a recurrent excercise !
I think maybe my best option would be trying to figure out how to get the terminals extended outside the box.
If I could get - say - 10 terminals onto 2 boards - I could then have more flexibility in where I can place the box itself, as at present it - of necessity, has to be amongst the fireworks for their ignitors to plug into it.
I could fit 2 of some sort of connector (waterproof ) into the lid that would accept 10 pairs of wires, then wire from these connectors to 2 of sets of 10 more speaker terminals at the end of some sort of cable.
Does any of that make any sense !
Then I only need to open the box to check for continuity, arming the system with the key and so on.
So - in summary.
How to extend the 20 internal speaker terminals to the outside of the box as 2 lots of 10.
How to make the connection from the terminals inside the box to the terminals outside the box.
Electronics is not really my thing but am asking here for advice before I destroy anything !
I should be ok soldering wires to new connections but tampering with electronics inside the box itself is beyond my abilities.
Thanks
Gerry