Hi all,

I just bought an abarth leather steering wheel minus the paddles, im going to fit it to my 1.8 dynamic.

As some of you may know, i dont have a "conventional" setup, im running a carPC, i want to link the steering wheel buttons to the carpc.

my understanding is that there are three types (in general) of steering wheel buttons:

1) simple button push presents a voltage on the end of a wire
2) all the buttons are on a voltage divider network and pressing a button changes the resistance presented
3) steering wheel buttons on a bus

im hoping its option 1 in the stilo, because thats the easiest one to interface into a PC, but i fear it could be option 3....

also, if ive gotten rid of the OEM stereo and i dont have a connect nav, will the steering wheel have any "normal" use in the car?

thanks for any help

Stilo steering wheel buttons are a NODE on the CAN, so unfortunately it's your option 3.

the cable connectors towards the U-shaped node are a simple voltage divider with resistors - the CAN-node converts this signal to a can-signal.
So you could bypass the can-node if you know what you're doing....

It all runs through a PCB board but i presume you know that. Have you managed to find out what does what i cant for the life of me find out which wires are horn.

i will do some digging and post up what ever you need to know....as soon as mine arrives, the screappie i bought it from needs it to move the chassis around for about a week then hes going to send it to me.

thanks yellowstilo; I belive im going to bypass the can node, or install my own circuitry for the buttons to make them "option 1" as this is by far and away the easiest to get talking with a pc.

Even a wiring diagram would do lol. I just can trace horn wires from the contacts to the printed part of the PCB but cant trace from the PCB to the connector block.

do a continuity test....its only going to be one wire you need to worry about, the othe ris GND....time to whip out the multimeter....

Hmm i always get confused when it comes to continuity tests. I always get a mental block (BTW i thought that it was the GND that completes the Stilo horn circuit).
So if i bridge a wire from the gnd on the horn into the car and then test all of the wires on wheel plug i should be onto a winner?

volxstu said:

Even a wiring diagram would do lol. I just can trace horn wires from the contacts to the printed part of the PCB but cant trace from the PCB to the connector block.

Click to expand...

This is the horn wiring diagram.

D47 is the 12 pin black clockspring connector. Pin 6 of that connector is connected directly to earthing point C16 with a black (N) wire. Pin 1 is connected via connector D1 to the horn relay with a Blue/Black (AN) wire.
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