Upgrading your headlights on your vehicle can sometimes be more work than first thought which is why we have set up this guide to select the right LED Conversion for your car, hassle free!

With so many different bracket mounts, heat dissipation methods, housings, canbus modules etc... it does make things quite complex. Through this guide we will include all the necessary steps involved in as simple format as possible.

Note that we have a large range of pre-selectable kits available for most vehicles. 


To find the globe that you will need for an LED conversion you will first start by removing your previous globe. Most cars have 2 separate globes in each headlight unit, 1 being your Low beam and other the High beam. There are the occasion in which you only have 1 globe. The reason for this is that your High and Low beam both run off the same globe, using a reflective cover on the High beam LEDs directing the light through the High beam housing.

Once you have pulled the previous headlight out from the housing look for the imprint which will state the globe type i.e H4, HB3, H7, H1 etc.. This imprint can be located in several spots on the globe most commonly found on the mounting plate. Example shown below.

Other locations can be on the under side of the mounting bracket or on the side of the connector plug.



H7 globes have a few different fittings that may be required for your vehicle. In most cases you will have no problems fitting a standard H7 globe but on the odd chance your car may require a different fitting. There are a total of 5 additional options from the standard H7 globe. H7-1/H7-2/H7-3/H7-4/H7-5 are all different variations to the method in which they mount. Unfortunately this step is not as easy as just finding the imprint as H7 might be all the information you get.

We have recently done some research into what fittings are most common and are now available through the LED Conversions page. The variation in fittings are more commonly to be found on some European makes and models. Here are examples of the different fittings you may encounter.

H7 Guide


Once you know the globe type you need, working out if you require an additional canbus module is quite an easy process. Most STEDI LED Conversion kits come with a CANBUS module inbuilt but there are the odd exception with some vehicles requiring an additional CANBUS to overwrite the vehicles computer. If you didn't unplug the globe in the search for what connection you needed you will do so for the purpose of this test.

Once a light is unplugged just switch on the ignition and turn on your headlights. Looking at your dash you now may or may not have an error icon/message regarding the headlights (Globe Failure). If no message has appeared you do not require an additional CANBUS Module. If you have a dash notification there is a chance you will need an additional CANBUS Module to install an LED Conversion. Below is an explanation to how the CANBUS systems work, unfortunately the only true form of working out if a model of car requires an additional CANBUS is through trial.


These are available in the same format as the LED conversion i.e H7, H4 etc...

Most modern vehicles have systems in play that moderate things like doors being open, faults in certain components, lights bulb blown etc... This system monitors the amp draw that your lights consume to work out if the light is functioning correctly. This type of system is compatible with the included CANBUS with your LED Conversion kit. Some vehicles not only monitor amps but voltage as well, this is where the additional CANBUS comes into play.

The additional CANBUS Module overwrites the vehicles computer into ignoring the additional current draw & voltage LED lights require. Note that additional CANBUS decoders are only required for low beam upgrades.

Now your all set with the information you need to convert your headlight to LED. Any further questions feel free to message us via email and Facebook or call us on (03) 9369 8845.




Whats better, Fans or Copper heat-sinks?

We have made the push to the Copper heat-sinks as they are able to be installed keeping the factory dust cover and require less space for install. This comes in handy when you have a dual battery set up or just a tight engine bay in general. Both styles produce roughly the same light output and beam pattern just with the advantage of copper heads being a more versatile install covering a wider range of compatible vehicles.

LED Copper Heads:
H1  /  H4  /  H7  /  H7-1  /  H7-3  /  H7-5  /  H8  /  H9  /  H11  /  H15  /  HB3  /  HB4  /  HIR2

LED Night Pilots:
H4  /  H11

CANBUS Module:
H1  /  H4  /  H7  /  H11

LED Parker Upgrade:
T10  /  T20


Upgrading your parkers to LED is quite simple and we are constantly expanding our options available for different vehicles. The 2 most common Parker globes are the T10 (also known as the W5W) and the T20 (also known as the W21W). 

Finding the type you require is quite simple, all you need to do is remove the current parker and look for the marking. The 2 are very similar with the key difference being the size with T10 measuring 9mm in width and T20 16mm. The height of the LED does have a few variations mainly in the T10 as it also covers a range of other applications across your vehicles lighting being indicators, interior, license plate lights etc... 

T20's have 2 common types 7440 which is standard for most vehicles having a single prong per side where as 7443 which has 2 prongs per side and commonly used for vehicles running DRLs off the parker globe. 7443 is able to be installed in both 7443 and 7440 sockets where as the 7440 is only compatible with 7440 sockets.

T Wedge


We are currently in the process with creating LED conversion kits specific to a wide range of makes and models but this does require a lot of research into all the individual globes fitted around the inside of each vehicle. In the mean time we are adding all the information required to convert to LED in our current available range which will expand as we come across different models requiring different globes, BA9s for example which is also a common parker globe.

Listed below are the current LED upgrades available at this stage,



T10sStarting off with most commonly found across the board is the T10. Used in most lighting throughout the interior of your car from dome/map globes to trunk and courtesy lights. Currently available in 3 sizes dependent on application the T10 comes in 33mm, 28mm and 24mm. All have a standard 8.8mm width at the plug end as the fitting is standard.

When replacing these types of globe our STEDI T10s are compatible with all T10 Wedge sockets you will just need to measure the height for the intended fitting via the previous globe. It is important to get the right size globe to replace your old ones as the wrong size may not fit into the existing socket and may have performance issues.


This style of globe is very similar to its usage as the T10 globe. Again available in 3 sizes, 31mm, 36mm and 42mm. The system in which Festoon globes is via 2 prongs each end in which the globe slots into. The Festoon globes are similar to the T10 application but dependent on the fitting style that your vehicle uses. 

These globes are measured end to end but are compatible within 2mm longer or shorter due to the style in which they are fitted to the socket.



The T20 isn't very common when it comes to interior lighting but some specific models are fitted up with T20's. If these style of globes are run in your vehicle they are mostly found in the dome light used and the 2 map lights.