1969 Chevy Truck AC Wiring Diagram

1969 Chevy Truck AC Wiring Diagram

If you’re restoring a 1969 Chevy truck or just need a wiring diagram for your AC system, you’ve come to the right place. In this article, we’ll provide you with the information you need to wire your AC system in no time. From the compressor to the controls, we’ve got you covered.

Compressor Wiring

The compressor is the heart of your AC system. It compresses the refrigerant and sends it to the condenser to be cooled. To wire the compressor, you’ll need to follow these steps:

  • Connect the compressor to the power source using a relay
  • Connect the compressor to the accumulator using a high-pressure switch
  • Connect the compressor to the evaporator using a low-pressure switch
  • Connect the compressor to the condenser using a suction line and discharge line
  • Connect the compressor to the control panel using a pressure sensor

With these connections in place, your compressor will be ready to go.

Condenser Wiring

The condenser is responsible for cooling the refrigerant that comes from the compressor. It does this by releasing the heat outside the vehicle. Here’s how to wire the condenser:

  • Connect the condenser to the compressor using the discharge line
  • Connect the condenser to the evaporator using the liquid line
  • Connect the condenser to the fan using a relay

With these connections in place, your condenser will be ready to cool.

Evaporator Wiring

The evaporator is responsible for removing heat from the inside of the vehicle. It does this by circulating the refrigerant through the coils. Here’s how to wire the evaporator:

  • Connect the evaporator to the compressor using the low-pressure switch
  • Connect the evaporator to the condenser using the liquid line
  • Connect the evaporator to the blower motor using a resistor
  • Connect the evaporator to the control panel using a temperature sensor

With these connections in place, your evaporator will be ready to cool the inside of your vehicle.

Control Panel Wiring

The control panel is responsible for regulating the temperature and fan speed inside your vehicle. Here’s how to wire the control panel:

  • Connect the control panel to the compressor using a pressure sensor
  • Connect the control panel to the evaporator using a temperature sensor
  • Connect the control panel to the blower motor using a speed switch

With these connections in place, your control panel will be able to regulate the temperature and fan speed in your vehicle.

FAQ

Question Answer
What type of refrigerant should I use? You should use R134a refrigerant. It’s the most common type of refrigerant used in modern AC systems.
Do I need to replace all the components when replacing the AC system? No, you can reuse some of the components as long as they’re still in good condition.
Can I install the AC system myself? It’s possible to install the AC system yourself if you have the necessary tools and knowledge. However, we recommend having a professional install it for optimal performance.
How often should I service my AC system? You should service your AC system every 2-3 years or as recommended by the manufacturer.
Is it normal for my AC system to make noise? No, it’s not normal for your AC system to make noise. If you hear any unusual sounds, you should have it checked by a professional.

We hope this article has provided you with the information you need to wire your 1969 Chevy truck AC system. If you have any questions, feel free to ask in the comments.