I did mine with a switch, but as a secondary safety added a indication light to know when the pump is working so I dont accidently leave the switch on leaving the car lol. But I havent had that problem as just like taking the ebrake off to drive. but yes needs to be as close to the tank as possible. its not really going to be needed under most use, however is great if the car has been sitting for a week and you need that pre boost, or after a decent drive and then you need to jump back in 5 min later as a boost for hot starts. one of the best things I have done with the 6v flatty other than the 6v alternator, 6v optima battery and a few other goodies.