Have you confirmed the battery is charging. Could be a bad earth, when it gives the fault test battery voltage plus to minus and also plus to earthed points, ie the engine. Should all be similar readings.

hi i have a feeling it could be your vacuum Are the vacuum tubes the right way? As the tube comes of the vacuum pipe that goes around the back of the engine, it does not go on the front of the vacuum chamber; it goes on the back and what comes...