Let me start off by saying that I know just enough about electronics to be dangerous (how to solder, follow a simple schematic, and check for connectivity problems and usually figure out what each wire is for).

I've installed a cruise control kit in my car, and I want to use a set of Honda steering wheel controls instead of the stock controls from the kit.  The cruise kit controls are expecting 12 volts, but I'm not comfortable running any more than 5 volts through the small steering wheel wires next to the airbag wiring.  I'd prefer even less, like 2-3 volts.

So I need to build a switching circuit that will provide the 12 volt signals to the cruise kit.  I was thinking of keeping it solid-state, since I don't know of any relays that will switch on 2-3 volts.  However, if there's a good reason to use relays then I can.

Here's a rough drawing of what I need:



How can I get started with this project?


Question: Omnifaces validateMultiple component only takes UIInput values, any workaround for considering UIOutput too?
Answer: Use &lt;h:inputHidden&gt; if you need hidden inputs.