Cadillac Repair: Display went blank, volt ohm meter, devill

Question
my sister just bought a 99 devill with 34,000 miles on it. while driving it she had to break extremely hard and turn the wheel  to the right to avoid an on coming car. This resulted in the display going blank.here mechanic removed and reset the fuses and this didn't correct the problem. She doesn't have a speedometer of gages now.  

Answer
If you are mechanicaly inclined or know of someone who is, You will need a DIGITAL VOLT/OHM METER, Simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information necessary to fix your vehicle.