Sure Bail 470017 Float Switch Wiring Diagram: Complete Guide
A float switch is a crucial component in any bilge pump system, ensuring that water is automatically removed from the bilge when it reaches a certain level. The Sure Bail 470017 is a high-quality automatic float switch designed for marine applications, offering reliable performance and durability.
However, correct wiring is essential for the Sure Bail 470017 float switch to function properly. In this guide, we’ll explore:
✅ The function of the Sure Bail 470017 float switch
✅ Step-by-step wiring instructions
✅ Wiring diagram explanation
✅ Testing and troubleshooting tips
✅ Maintenance for long-term reliability
If you need to install or replace a Sure Bail 470017 float switch, this guide will provide everything you need to know.
Understanding the Sure Bail 470017 Float Switch
The Sure Bail 470017 is an automatic bilge pump float switch that activates the bilge pump when the water level rises. This prevents flooding and damage in marine vessels by automatically removing water from the bilge.
Key Features:
✔ Automatic activation – Turns on the bilge pump when water reaches a certain height.
✔ Three-wire configuration – Provides flexible wiring options.
✔ Durable and waterproof design – Built for harsh marine environments.
✔ Easy installation – Can be mounted in different locations within the bilge.
🚢 Why Is a Float Switch Important?
Without an automatic float switch, a bilge pump would have to be manually turned on and off. The Sure Bail 470017 removes this inconvenience by detecting water levels automatically, ensuring your vessel stays dry without constant monitoring.
Sure Bail 470017 Float Switch Wiring Instructions
Proper wiring is crucial for safe and efficient operation. The Sure Bail 470017 uses a three-wire configuration, making it easy to integrate into most bilge pump systems.
Step 1: Mounting the Switch
🔹 Secure the float switch in a location where it can move freely with the water level.
🔹 Position the wires so they exit upwards—this prevents water from seeping into the connections.
🔹 Ensure the switch is properly secured to prevent movement due to boat vibrations.
Step 2: Understanding the Three-Wire Configuration
The Sure Bail 470017 float switch comes with three wires, each with a specific function:
- Brown Wire ➜ Connects to the positive (+) power source
- Black Wire ➜ Connects to the negative (-) terminal or ground
- Brown with White Stripe Wire ➜ Connects to the bilge pump’s positive (+) terminal
💡 Why Three Wires?
This setup allows the switch to control power delivery to the bilge pump, ensuring that it activates only when needed.
Step 3: Wiring Connections
Follow these steps to properly wire the Sure Bail 470017 float switch:
🔹 Step 3.1: Connect the Power Source
✔ Attach the brown wire to the fused positive terminal (+) of the battery.
✔ This ensures the float switch has the power needed to operate.
🔹 Step 3.2: Ground the Switch
✔ Connect the black wire to the negative (-) terminal of the battery or a suitable grounding point.
✔ This completes the circuit and ensures proper electrical flow.
🔹 Step 3.3: Connect the Pump
✔ Attach the brown with white stripe wire to the positive terminal of the bilge pump.
✔ This connection allows the switch to control when power is sent to the pump.
Step 4: Fuse Protection
It’s highly recommended to install a fuse in the positive line to protect the electrical circuit.
✅ The fuse should be rated according to the bilge pump’s specifications.
✅ This prevents overcurrent and potential damage to the switch or pump.
Sure Bail 470017 Float Switch Wiring Diagram
Below is a simple wiring diagram illustrating how to connect the Sure Bail 470017 float switch to a bilge pump system.
Wiring Guide:
Battery (+) ➜ Fuse ➜ Brown Wire ➜ Float Switch ➜ Brown/White Wire ➜ Bilge Pump (+)
Battery (-) ➜ Black Wire ➜ Float Switch (-) ➜ Bilge Pump (-)
📌 Diagram Breakdown:
- Battery powers the switch through the brown wire.
- The switch activates when water levels rise, sending power through the brown/white wire to turn on the bilge pump.
- The black wire completes the circuit by connecting to the negative terminal.
🔹 Why This Setup Works Best?
✔ Ensures automatic operation when water reaches the activation level.
✔ Protects against electrical short circuits with a fuse.
✔ Provides a simple and effective control mechanism for the bilge pump.
Testing the Float Switch After Installation
After wiring the Sure Bail 470017 float switch, you need to test it to confirm proper operation.
1. Manual Testing:
🔹 Lift the float switch manually to simulate rising water levels.
🔹 If wired correctly, the bilge pump should activate immediately.
🔹 Lower the switch back down and ensure the pump shuts off automatically.
2. Water Testing:
🚿 Pour water into the bilge and observe whether the switch triggers the pump as expected.
✅ If the pump activates and drains water, your setup is correct.
❌ If it doesn’t work, double-check wiring connections and fuse placement.
Troubleshooting Common Issues
If the bilge pump fails to activate after installation, check for these common problems:
1. Float Switch Not Triggering the Pump
✔ Check for loose or corroded wire connections.
✔ Ensure the float moves freely and is not obstructed.
2. Bilge Pump Runs Continuously
✔ The switch may be stuck in the “on” position—inspect for debris.
✔ A short circuit in the wiring could also cause this issue.
3. Fuse Blows Frequently
✔ Use the correct fuse rating for your bilge pump.
✔ Inspect for worn or damaged wires that may be causing a short.
Maintenance Tips for Longevity
✅ Regularly clean the float switch to prevent debris buildup.
✅ Check for loose or corroded wires every few months.
✅ Ensure the float moves freely and isn’t blocked by objects in the bilge.
✅ Replace the fuse if needed to prevent electrical failure.
By following these simple maintenance steps, your Sure Bail 470017 float switch will provide years of reliable service.
Final Thoughts: Why Proper Wiring Is Important
The Sure Bail 470017 float switch is an essential component for any automatic bilge pump system. Proper wiring and installation ensure seamless operation, allowing the pump to remove excess water without manual intervention.
✔ Understanding the wiring diagram prevents errors in installation.
✔ Using the correct fuse rating ensures electrical safety.
✔ Testing the switch after installation guarantees proper functionality.
With proper setup and maintenance, the Sure Bail 470017 float switch will keep your bilge dry and your vessel protected. 🚢⚡