Originally Posted by PitMarshall
There is no need to remove the battery power for this installation. Regardless, if you ever do need to remove the battery, it might be a good idea to pick up a $5 plug in power adapter for the cigarette lighter, just to maintain all of the vehicle's memory settings.
I've already changed my filter (without disconnecting the battery) but am about to put in a new battery in. The idea of keeping power to the car while I change out the batter is intriguing. What are you referring to when you say a $5 power adapter?