its not that hard to do yourself. I do it all the time.
take the plug apart and youll see that the Post(in the middle) is your power
The things on the side is your ground.
Follow those wire back to the circut board
Now you can either desolder them or just cut the metal pieces off and crimp wires onto the wires that are on there now.
then just splice the new wires onto an ing power wire and your set.