Whether you’re looking to add new features to your car such as Bluetooth or USB, installing a serious audio upgrade or simply replacing a faulty CD player, upgrading your vehicles headunit is a very rewarding project.

Now, many late model cars including several Holdens, Fords and Mazda’s have fully integrated dashboards which can make replacing the headunit difficult. Aerpro manufactures a number of vehicle specific kits to help you out and can be ordered in through any of our stores.

Tips and warnings
  • If you intend to refit the factory headunit later, ensure you have the PIN code to disable the security mode if required.
  • Some vehicles fitted with a battery backup alarm system will require additional steps to be taken before removing the battery terminal. Ensure you are aware of the steps before proceeding.
What you need
  • Small socket set
  • Screwdriver set
  • Electrical tape
  • Wiring harness adapter for vehicle and headunit
  • Dashboard installation kit, if required
  • Any special tools to remove the factory headunit, if required

Before you start

Once you’ve chosen the model that’s right for you, remove it from the box to ensure everything you need to install it is included such as the face plate and mounting sleeve.

Step 1

Disconnect the negative terminal on your battery.

Step 2

Next, remove the old headunit from the dashboard. You may need to remove some surrounding trim to access it.

If you are unsure how to remove any trim, a detailed workshop manual is highly recommended.

On the front of some headunits you may see two slots or holes on either side. These form part of what holds the headunit in place and may require specialist tools to remove.


Step 3

Disconnect the wiring harness from the back of the headunit. Simply press down the tab to remove it.




Now is an ideal time to check the harness adapter you purchased is correct for your vehicle.

Step 4

Disconnect the antenna. Make sure you are pulling on the connector and not the wire as this may damage it.

Step 5

Then, prepare the new headunit to be fitted.

Depending on how the original radio was mounted, use either the cage which involves using the metal sleeve that goes around your radio or use the factory brackets or brackets supplied with the new dash kit.

Step 6

Plug the wiring harness adapter into the factory plug, and then plug the new headunits harness into the brown and black connectors on the adapter.

Step 7

Connect wiring harness you prepared earlier and plug in the antenna.

Step 8

Slide the new headunit into the dashboard location.

Step 9

Reassemble the dashboard.

Step 10

Reconnect the negative battery terminal.

Step 11

Switch on the ignition and test the operation of the headunit including sources, auxiliary inputs, fader and balance functions.

Also, check the headunit switches off when the key is removed.

Click here to download a PDF version of this How-To.

Please Read: Important Information