I had many problem with glasses motor, radiator fan, lights, ... and finally discovered the main problem. They have a big cable that goes from battery to the starter motor. Then a cable from the starter to the main fuses box. So you have about 12 meters of cable before getting glasses motor to ground. In half an hour i soldered a big cable from plus battery to the fuses box and disconnected the old one end everything works. TAKE CARE NOT FIRE THE CAR. Ferrari engineers where drunk when designed this car !!! Alessandro.
If I understand this situation correctly, Alessandro is stating that the main 'constant' feed to the fuse panel is taken from a junction at the starter motor, which would be an inefficient way of doing from a functional point of view. It may, somehow, have made sense when it comes to assembling the car at the factory. I've already considered that it would be safer over all to leave the main cable back to the starter dead until required to energize the starter motor, ala most older Ford products. You bridge the solenoid lead to the main cable lug on the starter itself, then run a Ford style solenoid right at the battery, with the solenoid lead from your ignition switch going to it...This is a popular modification to Cheverolets as it eliminates a lot of small gauge wiring while at the same time increasing the current available available to operate the solenoid on the starter, the function of which is compromised on a hot engine. I have strayed form Alessandro's main point, which is...run a wire from the battery positive directly to the fuse box and enjoy the better operation that comes from lowering the voltage drop seen otherwise!
I really don't understand the previous mail, it's a lot easier, you need few minutes and 1 mt. cable to solve the problem. They probably had the car battery near the engine, moved the battery forward and doubled the cable to avoid reworking the circuit. Ferrari engineers are always DRUNK !!!! Alessandro. ps: let's say that are not able to deal with current and electronics : anybody knows something about kers ? ....
