If you own a 1979 Mercury 40 HP outboard motor, you may be wondering how to connect the wiring correctly. The wiring diagram can be a bit confusing, but with a little patience and the right tools, you can get the job done. In this article, we will guide you through the process of wiring your 1979 Mercury 40 HP outboard motor.
Tools Required
Before we start, let’s go over the tools you will need:
| Tool | Usage |
|---|---|
| Wire Strippers | To strip the insulation from the wires |
| Screwdrivers | To attach the wires to the terminal block and other components |
| Wire Connectors | To attach the wires together |
| Multimeter | To test the continuity of the wires |
Once you have these tools, you are ready to start wiring your 1979 Mercury 40 HP outboard motor!
Step-by-Step Guide
Step 1: Disconnect the Battery
Before you start working on the wiring, make sure the battery is disconnected to avoid any electrical shock. Remove the negative cable from the battery and set it aside.
Step 2: Locate the Wiring Diagram
The wiring diagram for your 1979 Mercury 40 HP outboard motor can be found in the owner’s manual or online. Print out the diagram or keep it on your phone or tablet for easy access while working on the wiring.
Step 3: Connect the Wires to the Terminal Block
The terminal block is where all the wires will be connected. It is usually located inside the control box. Follow the wiring diagram to connect the wires to the terminal block.
Step 4: Connect the Wires to the Ignition Switch
The ignition switch is where the wires for the key switch, choke, and starter solenoid are connected. Follow the wiring diagram to connect the wires to the ignition switch.
Step 5: Connect the Wires to the Engine
The wires from the control box and ignition switch need to be connected to the engine. Follow the wiring diagram to connect the wires to the engine.
FAQ
1. What is the purpose of the terminal block?
The terminal block is used to connect all the wires from the control box, ignition switch, and engine. It is important to follow the wiring diagram to ensure the wires are connected correctly.
2. Can I use a different wiring diagram for my 1979 Mercury 40 HP outboard motor?
No, it is important to use the correct wiring diagram for your specific motor. Using a different wiring diagram can cause damage to the motor or even be dangerous.
3. Can I wire my 1979 Mercury 40 HP outboard motor without a wiring diagram?
It is not recommended to wire your motor without a wiring diagram. The wiring can be complex and it is important to ensure the wires are connected correctly to avoid damage to the motor.
4. Why is it important to disconnect the battery before working on the wiring?
Disconnecting the battery is important to avoid any electrical shock. It is also a safety precaution to ensure the motor is not accidentally started while working on the wiring.
5. What should I do if I am unsure about wiring my 1979 Mercury 40 HP outboard motor?
If you are unsure about wiring your motor, it is best to consult a professional or contact the manufacturer for assistance.
