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: How does Yuka stealing Narumi's Alice take away his ability to love?
Answer: When Narumi used his pheromones, to make her love him. That made her loosing control of her Alice, which had the result that not only Narumi's Alice is stolen, but his love-feelings, too. It seems that the Pheromone-Alice is connected to the emotions, and an out-of-control-steeling-Alice steels more than it's supposed to. If Yuka had retained control, Narumi would still have his emotion.