I am trying to use the L1 and L2 LEDs included with the SD logging shield. The shield is connected to an Arduino UNO R3. What pins and/or jumpers I need to use to get the LEDs to work? Also what are the functions of the three jumpers in the SD shield?
[EDIT - this is the right answer] The LEDs are connected to JP11 (the two holes labelled "LEDS"). From there, you have to connect them yourself to whatever digital IO pins you want to use. They already have current-limiting resistors, so you can connect directly to digital IO pins.
"Used for communication between the Arduino board and a computer or other devices. All Arduino boards have at least one serial port (also known as a UART or USART): Serial. It communicates on digital pins 0 (RX) and 1 (TX) as well as with the computer via USB. Thus, if you use these functions, you cannot also use pins 0 and 1 for digital input or output."