Thanks to some members on here I finally managed to understand how a bridge rectifier can be used as a diode logic XOR gate in an automotive application. Now I'm trying to figure out how to select the "pull down" resistors. The bridge rectifiers I'm looking at are all rated at over 100V peak reverse voltage and 10A or more forward current, so I'm pretty sure they should be fine. But what I don't know is how to figure out an appropriate rating for the resistors. Thank you for any help!
I'm not worried about R3, just R1 and R2.