Power windows are a convenient and essential feature of modern cars. When it comes to 1986 Chevy trucks, their power window wiring diagram is a bit complicated. However, it’s not impossible to understand with a little effort. Here’s everything you need to know about the wiring diagram of 1986 Chevy truck power windows.
Overview of the Wiring Diagram
The wiring diagram for the 1986 Chevy truck power windows consists of several components. This includes the power source, the window motor, the window switch, and the fuse block. These components work together to ensure proper functioning of the power windows.
The power source supplies the necessary electrical energy to the system, while the motor converts the electrical energy into mechanical energy to move the windows up or down. The switch controls the operation of the windows, while the fuse block protects the system from electrical overload.
The Power Source
In the 1986 Chevy truck power window wiring diagram, the power source is the battery. The battery provides the necessary electrical energy to the power window system. However, the battery alone cannot operate the power windows. It needs a switch and a motor to move the windows up and down.
The battery is connected to the window motor through a wire. When the switch is activated, the electrical energy flows from the battery to the window motor, which converts the electrical energy into mechanical energy. This movement powers the window up or down.
The Window Motor
The window motor is the most critical part of the power window system. It’s responsible for converting the electrical energy from the battery into mechanical energy used to move the windows up or down. The motor has two wires that connect it to the switch, one for up and one for down.
When the switch is activated to the down position, the electrical energy flows to the motor’s down wire, causing the motor to turn in a specific direction. This movement powers the window down. When the switch is activated to the up position, the electrical energy flows to the motor’s up wire, causing the motor to turn in the opposite direction. This movement powers the window up.
The Window Switch
The switch is the part of the power window system that you use to open and close your power windows. The switch typically has four terminals or wires. These wires are for the down, up, ground, and power supply. The switch has a plastic frame that snaps into the door panel.
The switch is wired in series with the motor and the battery. When the switch is activated to the down position, it sends electrical energy to the motor’s down wire, powering the window down. When the switch is activated to the up position, it sends electrical energy to the motor’s up wire, powering the window up.
The Fuse Block
The fuse block is designed to protect the power window system from electrical overload. The fuse block is connected to the power source via a wire. The wire goes to the battery’s positive terminal or the starter solenoid. The other side of the fuse block is connected to the power switch and motor.
If too much current flows through the system, the fuse will break, cutting off the electrical supply to the power window system. This protects the system from electrical overload and prevents damage to the system and the car.
How to Troubleshoot the Power Window System
If your 1986 Chevy truck has a power window system that isn’t working correctly, you can troubleshoot the system using the following steps:
Check the Fuse
If your power windows aren’t working at all, the first thing you should check is the fuse. The fuse is located in the fuse block. Check the fuse and replace it if it is blown. The fuse is typically labeled as “PWR WDW” or “POWER WD.”
Check the Wiring
If the fuse is okay, check the wiring from the switch to the motor. Ensure that all the wires are connected correctly and that there are no breaks in the wiring. If you find a break in the wiring, you may need to replace the wire or the entire wiring harness.
Check the Motor
If the wiring is okay, check the motor itself. You can do this by disconnecting the wiring from the motor and connecting a test light to the wiring. Activate the switch, and if the test light illuminates, then the motor is faulty, and you need to replace it.
Check the Switch
If neither the fuse nor the motor is faulty, check the switch. You can do this using a test light or a multimeter to check for continuity. If the switch is faulty, you need to replace it.
FAQs
| Question | Answer |
|---|---|
| What happens if my power window motor fails? | If your power window motor fails, your window won’t open or close. You’ll need to replace the motor to restore your power window system’s functionality. |
| How do I know if my power window switch is working correctly? | You can test the switch using a test light or a multimeter to check for continuity. If the switch is faulty, you need to replace it. |
| What should I do if my power windows move slowly? | If your power windows move slowly, there may be something wrong with your motor, switch, or wiring. Check these components and replace any faulty parts to restore your system’s functionality. |
