Help with DIY dry bilge system

[Wiredup62]

I figured maybe someone familiar with wiring can help me on this. I am doing my "own" arid dry bilge system, with a sponge hooked to a hose that goes to a 12 dc pump, then goes to my gray water tank. I am using a water switch to serve as a relay from the water detector to the pump. I have attached a photo and schematic of the detector (4 wires, +, -, and two relay wires), and a photo of the switch (+, -, relay wires from detector, and the + relay). It all works, except, the detector closes the relay when not in water (instead of when sensing water), and when in water, shuts it off. So, backwards detection. I have tried reversing everything (the green and white wires from the detector) and still no go. Any recommendations?

 

[KPTIM]

You are working with a 2600 series module which has a Normally CLOSED relay.

Consider the 2500 series module which has a Normally OPEN relay contact.

 

[Captain Ralph]

Sounds like the N/O relay is really N/C or as we say in the swamp; bass-ackwards.
Have you contacted the mfg or vendor?

 

[Wiredup62]

You are working with a 2600 series module which has a Normally CLOSED relay.

Consider the 2500 series module which has a Normally OPEN relay contact.

Ahh, ok, that may be the issue. Reading the instructions on the detector, it says that will close when water is detected, which is where i was getting confused. So, the 2600 is Normally Closed For a Closed Loop Circuit 12 Volts DC. So, when it detects water, it opens the loop, turning it off. I need the 2500 which is Normally Open For an Open Loop Circuit 12 Volts DC. Thanks for the catch!