In modern agricultural machine cabins, replacing an original radio can quickly become complex due to differences in connectors. In addition, the radio antenna uses a FAKRA connector, which is incompatible with standard aftermarket radios. It is therefore necessary to use a FAKRA to DIN or DAB adapter to ensure a simple installation without any modifications.
The FAKRA connector is now found on a wide range of agricultural machines. To connect a radio without altering the original wiring harness, the use of a suitable harness is essential. With this in mind, AMS has developed an adapter: the FID660.
Let’s start by understanding the different connectors of a radio.
FAKRA, DIN, SMB: what are the differences?

SMB: DAB input (digital radio)

DIN: AM/FM antenna input for car radios

FAKRA: used on the machine side (original antenna)

Which agricultural machines are concerned?
The FAKRA connector is present on:
- Agricultural tractors (all power ranges)
- Combine harvesters
- Forage harvesters
- Telehandlers
- Sprayers
Most common brands: Case IH / Claas / Deutz-Fahr / Fendt / John Deere / Massey Ferguson / New Holland…







A Plug & Play solution designed by AMS to simplify your installation
To connect a modern car radio without modifying the original wiring harness, the use of the FID660 is essential.
Installation is done in just a few steps:
- Remove the original radio
- Position the new AMS radio
- Connect the female SMB to the DAB input
- Connect the male DIN to the AM/FM input
- Connect the male FAKRA to the machine’s antenna connector
- Complete the radio installation
This procedure ensures a quick installation while maintaining optimal reception quality.
Why use a harness like the FID660?
Using an adapter like the FID660 offers several advantages:
- No modification of the original wiring harness
- Quick, plug-and-play installation
- AM/FM and DAB compatibility
- Optimized radio reception and reversible solution
This is the most reliable way of installing new audio equipment on your FAKRA connector-equipped machine.
FAQ – Tractor unit and FAKRA connector
How do I connect a radio to a tractor?
If necessary, use a FAKRA to DIN adapter to connect the antenna to the radio.
How to connect a FAKRA antenna to a radio?
To connect a FAKRA antenna: Connect the FAKRA to the machine, then use the adapter to DIN (AM/FM) and connect the SMB connector if the radio is DAB+ compatible. The FID660 makes this connection easy.
Is the FID660 compatible with all makes of tractor?
Yes, the FID660 harness is compatible with most agricultural brands as long as the machine is fitted with a FAKRA connector, including: Case IH, New Holland, Fendt, John Deere, Claas, Massey Ferguson, Deutz-Fahr.
Can I keep my tractor’s original antenna?
Yes, using a FAKRA adapter allows you to keep the original antenna without modification. This makes installation quick and easy.
How complicated is it to replace a radio?
No, with the right harness, installation is quick and requires no advanced technical skills. It’s usually a Plug&Play installation.
What’s the difference between FAKRA and DIN?
FAKRA is used on the machine side, DIN on the radio side.
Switch to a compatible radio in just a few minutes
With a suitable FAKRA adapter, you can easily install a modern radio on your agricultural machine without any modifications. Discover our solutions compatible with all major makes of tractors and agricultural machinery.












