If you own a 1973-1987 Chevrolet truck, you may be wondering how to wire a dual tank fuel system. This can be a beneficial upgrade for several reasons. First, it can increase your truck’s fuel capacity, giving you a longer range between fill-ups. Second, it can improve your fuel economy by allowing you to switch to a more efficient tank when cruising at highway speeds. Third, it can provide you with a backup fuel source in case of a leak or other problem with one of your tanks.
Wiring a dual tank fuel system is not difficult, but it does require some basic electrical knowledge and tools. The first step is to gather your materials. You will need:
- Two fuel tanks
- A fuel selector valve
- A length of fuel line
- Electrical wire
- A crimping tool
- A drill
- A hole saw
Once you have gathered your materials, you can begin the wiring process. The first step is to mount the fuel selector valve. The fuel selector valve is typically mounted on the firewall, but it can also be mounted on the frame or under the bed of the truck. Once the fuel selector valve is mounted, you can connect the fuel lines to the valve. The fuel line from the front tank should be connected to the inlet port on the fuel selector valve, and the fuel line from the rear tank should be connected to the outlet port on the fuel selector valve.
Next, you need to wire the fuel selector valve to the ignition switch. This will allow you to switch between the front and rear tanks using the key in the ignition. To wire the fuel selector valve to the ignition switch, you will need to run a wire from the ignition switch to the fuel selector valve. The wire should be connected to the terminal on the fuel selector valve that is labeled “IGN.” You will also need to connect a ground wire from the fuel selector valve to the frame of the truck.
Once the wiring is complete, you can test the fuel selector valve. To test the fuel selector valve, turn the key in the ignition to the “ON” position. The fuel selector valve should switch to the front tank. If the fuel selector valve does not switch to the front tank, check the wiring connections.
1. Compatibility
Compatibility between the fuel selector valve and tanks is paramount for a successful dual tank fuel system in a 73 87 chevy truck. Here are key aspects to consider:
- Fuel Type: Ensure the fuel selector valve is designed to handle the type of fuel used in your truck, whether gasoline or diesel.
- Tank Size and Shape: Verify that the fuel tanks are compatible with the dimensions and shape of the designated mounting locations in your truck.
- Fuel Line Connections: Confirm that the fuel selector valve and tanks have matching fuel line connections to ensure a secure and leak-free fit.
- Electrical Compatibility: Check that the fuel selector valve is compatible with your truck’s electrical system, including voltage and amperage requirements.
By ensuring compatibility, you lay the foundation for a reliable and efficient dual tank fuel system in your 73 87 chevy truck.
2. Routing
In the context of “73 87 chevy truck dual tank wiring,” routing plays a critical role in ensuring a safe and efficient fuel system. Careful planning is necessary to prevent interference with other essential components within the truck’s chassis and engine compartment.
- Fuel Line Routing: Proper routing of fuel lines is crucial to maintain a leak-free fuel system. Lines should be secured away from sharp edges, heat sources, and potential contact points with moving components like the driveshaft or suspension.
- Electrical Wire Routing: Electrical wires connected to the fuel selector valve and fuel level sensors must be routed securely to avoid damage from abrasion or heat. Proper wire routing also minimizes the risk of electrical shorts or interference with other electrical systems in the truck.
- Component Clearance: When planning the routing of fuel lines and electrical wires, it’s essential to consider the clearance required for other components, such as the exhaust system, steering linkage, and brake lines. Adequate clearance prevents these lines and wires from being pinched, crimped, or damaged.
- Accessibility for Maintenance: While securing fuel lines and electrical wires, accessibility for future maintenance and repairs should be considered. Routinely accessible connections and components simplify troubleshooting and servicing, reducing downtime.
By carefully planning and executing the routing of fuel lines and electrical wires, you ensure a reliable and safe dual tank fuel system in your 73 87 chevy truck, minimizing the risk of leaks, electrical issues, or interference with other critical components.
3. Connections
In the context of “73 87 chevy truck dual tank wiring,” secure electrical connections and the use of heat shrink tubing are crucial for ensuring a reliable and long-lasting fuel system. Here’s why:
Electrical Integrity: Secure electrical connections prevent loose or intermittent connections that can lead to voltage drops, signal interference, or even electrical fires. By ensuring proper contact between terminals and wires, secure connections maintain the integrity of the electrical system, allowing for the proper functioning of the fuel selector valve and other electrical components.
Environmental Protection: Heat shrink tubing provides a protective layer over electrical connections, safeguarding them from moisture, dust, and other environmental elements. This protection is especially important in the harsh undercarriage environment of a truck, where exposure to road grime, water, and extreme temperatures can degrade electrical connections over time.
Durability and Longevity: Secure electrical connections and the use of heat shrink tubing contribute to the durability and longevity of the dual tank fuel system. By preventing corrosion, short circuits, and other electrical issues, these measures ensure that the fuel system operates reliably for extended periods, reducing the need for repairs and replacements.
In summary, making secure electrical connections and using heat shrink tubing in “73 87 chevy truck dual tank wiring” is essential for maintaining a reliable, durable, and safe fuel system. Neglecting these aspects can lead to electrical problems, decreased fuel efficiency, and even safety hazards.
4. Testing
In the context of “73 87 chevy truck dual tank wiring,” testing the fuel selector valve and fuel system is a crucial step before relying on the system to ensure its proper functionality and safety.
- Functional Verification: Testing the fuel selector valve ensures that it effectively switches between tanks, allowing the driver to select the desired fuel source. This verification process involves checking for leaks, proper fuel flow, and the absence of any operational issues that could compromise the system’s performance.
- Fuel System Integrity: Testing the fuel system involves checking for leaks, proper fuel pressure, and the absence of any blockages or restrictions in the fuel lines. A thorough inspection of the fuel lines, fittings, and connections is necessary to ensure that the fuel is delivered to the engine without any interruptions or issues.
- Safety and Reliability: Testing the fuel selector valve and fuel system helps identify potential safety hazards or reliability concerns. By addressing these issues proactively, you can prevent fuel leaks, engine performance problems, or even more severe consequences that could arise from a malfunctioning fuel system.
- Peace of Mind: Conducting thorough testing provides peace of mind, assuring you that the dual tank fuel system is operating as intended, giving you confidence in its reliability and performance. You can embark on your journeys with the knowledge that your fuel system is functioning correctly, reducing the risk of unexpected breakdowns or fuel-related issues.
In conclusion, testing the fuel selector valve and fuel system is an essential aspect of “73 87 chevy truck dual tank wiring” to ensure the system’s functionality, safety, and reliability. By verifying the proper operation of these components, you can prevent potential issues, enhance your peace of mind, and ensure that your truck’s fuel system operates at its best.
Conclusion
The exploration of “73 87 chevy truck dual tank wiring” has shed light on the importance of a well-designed and properly installed dual tank fuel system. Upgrading to a dual tank setup offers increased fuel capacity, improved fuel economy, and a backup fuel source, enhancing the functionality and range of your truck.
Throughout this discussion, we have emphasized the significance of component compatibility, careful routing of fuel lines and electrical wires, secure connections, and thorough testing procedures. By adhering to these guidelines and seeking professional assistance when necessary, you can ensure the reliability, safety, and optimal performance of your dual tank fuel system.
Remember, a well-maintained dual tank fuel system not only enhances your truck’s capabilities but also contributes to peace of mind during extended journeys. Embrace the benefits of this upgrade and enjoy the freedom and convenience of extended range and backup fuel availability.