Hey i just go my new air fuel gauge form ebay. Its an obx racing guage. FOr some reason it came with instructions to install a turbo guage

SO now iM stuck. I know what some of the wire are. it has two thicker wires that are red and black i think these are for the lighting of the gauge. THen there are 3 smaller thinner wire it a dark red a kinda of blue one and another black one iM guessing the black is ground

The other two i don't know where they go. I hear one goes to the o2 sensor but i don't know where and i don't know where the other wire goes
please help thanks alot