SO I have a new ECU that has launch control. It uses a button/switch of course. I wanted it on the steering wheel but then decided to go with a clutch switch. Then I realized I want to rev my car sometimes liek when matching revs for downshifting.

So I want it on the wheel again. No tether. I tried a mock up of the tether and it just turned my signals and wipers one with the coiled wire (like a telephone cord).

I've see different models of SWI JACK and still can't find anything other than maybe retrofitting a one wire cruise setup and pissing about with it.

Am I missing a kit that's available for horn and 2 or 3 switches to go through the one wire setup? Reading some resistance values and then dropping a ground? I'm no electronics whiz but I sure wish I was with this stuff.

 

I bought a normal keypad control unit with a relay board - similar to an alarm control - once you strip out the button and plastic surround it fits easily behind the steering wheel.

http://www.oceancontrols.com.au/cont...r%20boards.htm

Then some nice 16mm push buttons.

 

Or you could use one of these.

http://www.oceancontrols.com.au/controllers/pixel.htm

And as you say add some different value resistors through buttons to ground (voltage dividing). The kit has a regulated 5v - wire to analogue input and horn wire and switch relays based on different voltages produced by switching buttons with resistors to ground.