What may causes breaking fail to function when some of ABS wire burnt out? on 1991 Mercedes-Benz 300E

I experienced short circuit on the elec fan wiring near the ABS unit while driving, and burnt some of the ABS cables. Noticed the problem when trying to make a breaking, and felt the braek failed to function just like losing break fluid. Need to know if maybe the ABS unit still can normally funtion after rewiring or have to be repair/replace. Which part of the system that maybe broken?

could be a collapsed break line.electrical may over compensate causing the wiring to cook.