Yes meshat, you are correct. A good "power" source is right below the hood tach, the wiper motor. If you piggyback the power lead for the tach right off the wiper motor power lead, it will lights up as soon as you turn the key, just as it should. It is very simple, crimp a striaght blade connector to the power wire for the tach and push it the plastic connector plug that plugs into the wiper motor. It's a perfect power source, quick and simple!