1994 electrical?

Just buy this 94 Lesabre. At 3rd day keyless fails. A/C blows only down and up (feets and up, not in front). Power antenna fails (The radio sounds abnormal). Today, I have no lights in the radio and A/C. The A/C is always on and the control is not working anymore.

I hope somebody can tell me something about this, since I'm in Mexico and I don't know where to take this beautiful american car!
(Excuse my anglish)