Brown or orange single wire from ignition (hot in run or accessory) to blower motor relay (appears to be 4 prong), the three prong should be light blue or white, red or yellow and orange and black to blower motor resistor which appears to be a 3 prong.
To the blower motor itself is a single orange or black OR a black/orange or black wire to blower motor. This wire appears to lead from the three prong harness to blower.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.