I'm powering an 18ga 24V DC submersible pump for a water fountain in the yard using a 110V AC to 24V DC power supply (18 ga). I'm planning to use 12ga stranded low voltage wire (max.30V) from the power supply to the pump (approx. distance 70ft). Looking for compatible quick disconnects for 18ga to 12ga at both the power supply location and the pump location.
I purchased the following disconnects but since the connections to the pump will be exposed to the elements, not sure if they will adequately protect against moisture. Wondering if I should look into military grade disconnects to be safe?