On my 57, it has an external turn signal switch/flasher assy. It has TB 12-16 on it,assuming model #. It has 2 yellow,1 black, 1 green, 1 red, 1 blue, 1 gray, and 2 gray/black wires. The blue wire goes to the light bulb in the switch. Anyone help me figure out how to wire this into my new harness? (Upgrade harness) Which color wires are for what? Thanks.