  The amperage is on the label of the ballast. When you connect the ballast to power you will see it along with the voltage and pf of the ballast. F40T12 twin 8 foot tubes, ballast usually draws about .75 amps. The amperage is on the label of the ballast. When you connect the ballast to power you will see it along with the voltage and pf of the ballast. F40T12 twin 8 foot tubes, ballast usually draws about .75 amps.
A Single Din is the standard size of a head unit (the stereo in the dash of your car) a double din is twice as large. Double dins are good for cars that have large stock head units like a caddyhas.
Single DIN and Double DIN DVD Player: What Make It Different. Nowadays, people see cars as a kind of an entertainment center-on-wheels. Most probably, when we say entertainment, a DVD player is always on the list. However, if you are thinking about having car DVD player, you should have to distinguish first which one do you prefer, the single DIN or the double DIN DVD player? Well, to answer that question, you will first need to understand the meaning of its name and how do both differ from each other.