93 coupe power lock problem

hey guys got a lil problem with my powerlocks. heres the low down. doing a complete resto on my coupe. gutted the car down to the shell. im in the process of putting everything back together. got the whole interior back together but the engine still isnt in. i dont have the headlight wiring in or the engine harness in. everything that can run on power as of now does work. radio, dome light, tail lights, windshield wiper motor, power windows, trunk light, gauge lights, a/c blower motor. everything but the power locks. they worked fine when i striped the car down but now nothing. all the wires are hooked up. checked the fuses and those are fine. is it possible that the engine harness or headlight harness has to be in? and i did move my battery to the trunk. any ideas? any leads would be a great help. thanks so much.

thanks cjrpony. i already checked the wires for power with a dmm. and no power. you said to check the ground harness for the master switch. which ground harness for what master switch? if one of the actuators is bad could it short out the circuit and maybe cause both of the switches not to work?

aww thank you guys. ill be checking more into this problem this weekend. ill let you know if i can find out anything with the help you've given me. thanks alot.