For this float switch to work water needs to be present in the bilge. Built in float switch system.

Led Bilge Pump Dash Switch
Bilge pump switch not working. No power consumption until the pump turns on when water rises. Troubleshooting bilge pump wiring to find out why bilge pump not working. By the time i realized it was no longer working. Rust protected stainless steel shaft. Suitable for boat yacht camper van caravan. I looked at the fuses and they look fine although i.
The bilge pump then comes on and the boat can remain afloat. Bilge got kicked on accidentally. Verified pump works by applying 12v direct to motor. Next take the negative power supply lead supplying the bilge pump and also cut back some insulation to expose the wire strands inside if you havent already. Disconnect and remove the old float switch for bilge pump ensure the power supply to the bilge pump is disconnected at both the terminal and the battery. 97 sportster bilge pump not working when i turn switch on.
Also verified that there was 12v coming into the plug that connects to float. In most cases use an on off switch. A bilge pump float switch is a tool that is used by many boat owners to ensure that their boat does not sink due to rising water levels. The float switch for the bilge pump used for replacement should be the same type as the old bilge pump float switch. It shares a switch with the livewell which is now not working either. Turned switch off and meter read 04 volts.
I took multimeter to the male connector that provides power to the unit and got a reading of 08 volts with switch on. There are two paths through it one direct bipassing the float and one in series with the float switch series means and both the auto switch and the float switch must be closed for the pump to activate. To check if your float switch is working or not cut the wire leading from the float switch to the pump stripping back a bit of insulation to expose the wire strands inside. There should also be a switch at the helm to override the automatic float switch enabling you to turn on the pump manually. A well functioning float switch can detect the rising levels of water in the boat. Seems the float is not working as i checked it for continuity but i jumped through the plug that the float connects to and still not working.
Most pumps have an automatic float switch that detects when water is in the bilge and automatically turns on the pump. This then causes the float to rise to the water level. An exposed pump impeller could trap an unwary finger if the pump suddenly starts. Fully automatic bilge pump. Fine workmanship and good performance. When the float switch manages to remove all the water from the bilge it automatically.
A manual auto bilge switch is an a b switch with a center off position. Does this mean my switch is working properly and getting correct voltage. Both pumps are fairly new and were both working fine before the bilge got left running.
Gallery of Bilge Pump Switch Not Working

