1988 Buick Century Window Regulator

I thought the window regulator was bad. I purchased a new one tested it and the window only goes down. I checked the blue and brown wires on the plug and they get voltage one at a time depending on what direction you push the switch. My question am I thinking correctly that each side of the plug operates the direction of the motor, do I possibly have a bad regulator (from Advance Auto) or am I not troubleshooting this properly.

Thanks for any help and/or suggestions.