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Ice guides and mods

453 Multimedia Pin Out

Modification Details




This is the rear of the radio unit that connects to the touch screen multimedia unit.
It is the most basic version of the radio unit. It is hidden behind the dash.

The 3 main connectors are:

BB - Speaker outputs, power input and earth.
BC - Data outputs and inputs to the touch screen unit.
The white FAKRA connector on the left is the FM/DAB antenna input.

On media units with DAB etc, there are other connections not shown here.


Connection BB



Word of warning. The numbers moulded in the housing probably don't match the pin numbers given by smart.
Go by the wiring colours and see if you can work out the numbering pattern.


Pin Number Wire Colour Function
1 Grey Left Rear Speaker +
2 Pink Left Front Speaker & Tweeter +
3 Pink Right Front Speaker & Tweeter +
4 - -
5 Red Fuse Box AA S14 (Fuse 14)
6 White Left Rear Speaker -
7 Green Left Door Speaker & Tweeter -
8 Blue Right Door Speaker & Tweeter -
9 Green Right Rear Speaker +
10 White Right Rear Speaker -
11 - -
12 Black/Brown Earth/Ground

Sub Output?

No. Cars with the sub option take the left and right audio signals, pass them into an amp with a low pass filter.
The low frequency output is them connected to an unpowered sub woofer speaker.

You do not need to use the smart amplifier. Any aftermarket amplifier with a sub
connection will work fine (assuming it's powerful enough to drive the speaker.

Alternatively, you can just buy an active "under seat" sub woofer.
Then you connect the high level audio connections to the appropriate speaker outputs.
Attach an earth, switched live and permanent live.

Connection BC

I will add the connection tables when I get a chance. There are a lot of connections and a lot of separate units.
The main question is the speaker outputs at the moment so I started with those.

Fully Featured Radio Unit

I found a low quality photo of the fully featured unit with the extra connectors.


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