fan switch wiring help

[justafiremun]

I have a 71 w/ a/c and the issue is the previous owner cut the wires off the bad switch. I have a new switch and need to figure out which wire goes where. The a/c switch has three prongs that are stamped L, H, B the top single prong is stamped M. The four wires I have are Red (this is my power wire), Yellow (??), Orange / Yellow(??), and blue(??) If anyone could direct me to an old post or can help that would be sweet.