You're gonna need to get a ammeter on it to measure the drain -- and then start pulling/replacing fuses one by one til you ID the circuit where the draw is. Once you get the electrical system squared away -- then you go back and begin to tackle the drivability problems. Right now, you're just guessing and replacing parts -- sometimes we get lucky in that process, but it's no substitute for actually diagnosing what the problem(s) is (are).