my old 05 actually used 1156 tail light bulbs and they were stupid inefficient. You need to pull one out and see just what bulb it takes. Be aware though some automotive bulbs use a resistor in them and you won't really save anything. They do that so the blinkers function without an electronic assembly and the computer see's the same load as a normal bulb. Make sure you get LED's without the resistor if you are trying to save power
Chris