Thanks for the replies.
I thought it was pretty common to hook up multiple buttons with different resistors so that you can tell by the current which button was pressed by reading the current via an analog pin. I have done this with standard buttons and resistors, but did it with a VCC not ground. Now I have a break out board from a stereo with three buttons connected the same way, but also connected to a ground
|---- button 1 -- R1 -- (out)
|---- button 2 -- R2 -- (out)
|---- button 3 -- R3 -- (out)
(all outs are connected as a single wire)
To describe it, there are 2 wires - one is input into the board and other is output from the board. If no button is pressed, there is no current through the wire. If a button is pressed, the resistor between the button and the output controls how much current flows. When I power an LED with normal 5v and a resistor, it lights up full. To test, I ran a wire from the ground/resistor to the input wire and output wire to ground on the LED. This makes the ground end up running through all three buttons. With no button pressed, the LED is off. When I press button 1 the LED comes on dimmer than full, button 2 lights up the led lighter than 2 and button 3 even lighter. This tells me that I should be able to read those current differences to know which button is pressed but can't figure out how to make it work when the connection is ground not VCC.
if not feasible I'll just ignore the buttons as this is just a learning experience.