i connected the radio to a ups power supply. in oprder to power up the radio i have to connect the red and yellow wires together and black to ground. but now i only have the gps module connected to the usb not thje radioi . and i aldo have the red and black wire connected together. i took the board to an electronics technician and he told me that the 2 resistors that are missing dont matter because he check where they go on the opposite side of the pcb board and they dont connect to anywhere. i am goiny to take it again to make a proper soldering