Quote Originally Posted by 4.8man View Post
Hi all, I've advanced a little now, have bought the control switch from Niss 4X4, for $200 plus postage, they wouldn't come down on their price! Oh well will move on.
It has 4 wires coming out of the switch, plus a tab spliced on, witch I presume is for the horn, or earth? Not sure what vehicle it came out of, and looks like it has been modified already.

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At first, after looking into the install job, it seemed a bit complex, so I contacted some professionals, mobile and retail radio installers, but they weren't keen to do the job!
So after thinking a bit more, and investigating my wagon (2002 4.8lt. Petrol model) it's looking straight forward, and may not be as complex as first thought, as long as the following work:
So my wagon has a cruise control system and switch installed from factory built and also a steering wheel air bag.
The air bag has its own yellow plug and 2 wires going through the clock spring. The cruise control has 2 wires and the horn, 1 wire going through a white plug, going through the clock spring, all on the air bag side of the clock spring.

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As you can see, there are 2 spare terminal slots, in the white plug.
On the other side of the white plug, going into the clock spring, there are 5 wires going through the clock spring.

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On the other side of the clock spring (under the steering column) there is 7 wires coming out. Therefore that must include the 2 spare wires. Good news. Remember there is only 5 wires used to date; 2 for the cruise control, 2 for the air bag, and 1 for the horn.

My head unit is a Pioneer AVH-Z5250BT and doesn't require an intetface module to make the steering wheel switch to work.

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It has a single radio jack in the back of the head unit for the steering wheel control.

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So I'm thinking: could I just join/soldier 2 pairs of the 4 wires together to make 2 double wire to plug into the 2 spare terminals in the white plugs, leading into the clock spring. Then pick them up on the outward side of the clock spring, find out where they run to/install new wires and plug them into the back of the head unit with a new jack plug?
Sounds simple, but is there something I'm missing?

Thanks in advance, cheers, Col.
I can't see the first photo you posted, doesn't load for some reason, but you are on the right track with your investigations tracing the wires through the clock spring.
Have a look at post #12 in this thread and you can see exactly the two wire loom you are describing that I made that connects to the audio jack.