Yes, you will most probably need to rewire parts and delete the ballast part of the wiring. I would consider an LED setup as going from Xenon to halogen is a backwards step.
Also you may end up blowing the halogen bulbs as it sounds like you have a wiring fault.
If you go to LED, you need a D3S type bulb that can switch between low and main beam.
In my opinion I would spend the time fixing the problem, rather than trying to patch it with old technology.