It's very simple. The do-it-yourself kit consists of a small container, made of glass, metal or plastic, which is usually installed under the hood. You fill it with DISTILLED WATER and low-cost household catalyst (that causes the electrical current). The device gets 12 Volts from the engine, and produces HHO gas (Hydrogen+Oxygen).
The HHO gas is then supplied to the engine's air intake or carburetor as shown in the diagram below. Our design is simple. Don't worry, you will get full instructions and diagrams that make it simple and clear. Installation time depends on your skills, but I estimate that it will take you 15-20 minutes to make the physical connections shown below:
The electrical connection is quite simple - but must be done right. The device connects to the 12 Volts of your battery via the ignition switch, to prevent hydrogen production when the engine is off. A low-cost relay (I get them for less than $3 from All Electronics) may be added and the manuals show how. Each device is fuse-protected and draws very little current, normally only 2-3 Amps. This may take 10-15 minutes to connect depending on your skills. If you have difficulty in this area you can (a) get help from a mechanic, or (b) get help from auto stereo installers, who are very familiar with vehicle electrical wiring.
