1987 Chevy Truck Fuel Tank Switch Wiring Diagram
Are you having trouble with the fuel tank switch in your 1987 Chevy truck? Don't worry, you're not alone. Many Chevy truck owners have experienced similar issues with their fuel tank switch. In this article, we will provide you with a wiring diagram that will help you troubleshoot and fix any issues you may be having with your fuel tank switch.
Understanding the Fuel Tank Switch
The fuel tank switch in your Chevy truck is responsible for switching between the two fuel tanks in your truck. This switch is located on the dash and has a lever that allows you to switch between the two tanks. If you're having trouble switching between the two tanks, there may be an issue with the wiring of the switch.
Locating the Fuel Tank Switch Wiring
The first step in troubleshooting your fuel tank switch is to locate the wiring. The wiring for the switch is located under the dash on the driver's side of the truck. You will need to remove the kick panel to access the wiring. Once you have located the wiring, you can begin troubleshooting.
Identifying the Wiring
The wiring for the fuel tank switch is color-coded. The wires for the switch are brown, pink, and purple. The brown wire is the power wire, the pink wire is the ground wire, and the purple wire is the switch wire. Understanding the color-coding of the wiring will make troubleshooting much easier.
Testing the Wiring
The first step in testing the wiring is to check for power. To do this, you will need to use a multimeter. Set the multimeter to measure DC voltage and touch the black lead to a ground and the red lead to the brown wire. If you have power, the multimeter should read between 12-14 volts. If you don't have power, there may be an issue with the wiring or the switch.
The next step is to check for ground. To do this, set the multimeter to measure resistance and touch the black lead to a ground and the red lead to the pink wire. If you have a good ground, the multimeter should read 0 ohms. If you don't have a good ground, there may be an issue with the wiring or the switch.
Finally, you will need to test the switch wire. To do this, set the multimeter to measure resistance and touch the black lead to a ground and the red lead to the purple wire. With the switch in the "off" position, the multimeter should read 0 ohms. With the switch in the "on" position, the multimeter should read infinite ohms. If the switch is not functioning properly, it will need to be replaced.
Replacing the Fuel Tank Switch
If you have determined that the fuel tank switch is the issue, it will need to be replaced. To do this, you will need to remove the old switch and install the new one. The new switch should come with instructions on how to install it. Be sure to follow the instructions carefully to avoid any issues.
Conclusion
By following the steps outlined in this article, you should be able to troubleshoot and fix any issues you may be having with the fuel tank switch in your 1987 Chevy truck. Remember to always use caution when working with electrical systems and to follow all safety precautions.