One gray wire from the float switch connects to the solid brown positive wire from bilge pump. Wire your float switch to your 3 way switch.

Bilge Pump Swannanoa
Rule 3 way bilge pump rocker switch wiring. The switch has a spring return to off from the manual position. Toggle has three positions automatic off or manual and has a fail safe spring return to off from the manual position. Led indicator when switch is on. Wiring diagram is included in package. There is a wiring scheme in the first few minutes. Automatic off and manual.
Panel is black stainless steel and has red indicator light and fuse holder. Float switch should be wired with the 3 way switch so you can freely select the automatic mode on or off. Controls any pump equipped with an automatic float switch. We have wiring diagrams and wiring guides on how to wire a 10 terminal navancher on off on 3 way carling contura rocker switch as well as a wiring diagrams in how to wire a 10 terminal bilge auto manual on off on 3 way carling contura rocker switch for more on how to wire a bilge pump check this out we also have a general dpdt wiring. This allows you the freedom to select off on or automatic. 3 backlit bilge rocker switch wiring diagram.
For use with all 12 vdc systems. Lead bilge pump wiring up and out of the bilge in a timely manner. Shoreline 3 way bilge pump switch panel makes wiring your bilge pump system as easy as it gets. Of the three bilge pump switches the only one thats not extremely simple is the backlit automanual bilge pump switch. Rule 3 way panel lighted bilge pump switches. The third wire should to be connected directly to manual side of panel switch.
Including wiring diagram further simplify installation. The other gray wire from the float switch connects directly to the automatic side of panel switch. Connect the black negative wire to negative battery terminal or buss bar. The rule model 41 and 42 3 way panel lighted switches control any pump equipped with an automatic float switch. Learn more about how our awesome backlit switches work here even that one is still pretty straight forward though here are some diagrams that show the single jumper required on the back of the switch. Secure wiring so it does not sag or come in contact with the bilge water.
This video is specific to wiring a seaflo brand 3 way switch pump with a bilge pump and a 12 volt battery. The switch toggle has three positions. Deluxe 3 way panel lighted switch by rule pumps. I suggest you look at that carefully.