Suspect I have a bad speedometer sending unit on my 1976 308. Err, excuse me, "Speedometer Generator" as Ferrari calls it. Recently had the dashboard speedometer repaired at Moma in Alberquerque and they told me the circuit board and components inside were "fried." Before reinstalling it, I decided I'd better check the voltages on the connector at the dash. On the 8-pin dash connector, five wires go to light bulbs inside the speedometer and three wires go to the speedometer itself: Blk = Gnd, Green = +12V and Red/Blk is the signal wire coming from the sending unit at the transmission. With a Fluke meter in my lap I tested the voltages at the dash while driving the car. I got +12V on the Green wire but also got +12V on the Red/Blk signal wire. Moma told me this is wrong and is what probably fried the electronics. They said voltages on the signal wire should be pulses in the +3v to 6.5V, depending on the speed of the car. To check for shorts inside the dash and harness, I disconnected the sending unit at the transmission. Now, the signal wire at the dash was 0v. No shorts in the harness. Next, applied +12V to the Green wire on the sending unit and the Red/Blk wire also measured +12V. Aha! The sending unit appears to be shorted. Now I want to take the sending unit out for a closer look, but my manual has nothing describing this. It looks simple enough: a single large nut holding it to the transmission. But there's also a bolt on the side of the transmission in the vicinity of the sending unit. ??? If anyone has taken the sending unit off a 308, let me know if its as simple as it looks and if there are any special alignment or other screwy thing going on when reinstalling it. Also, does anyone know where to find a new or used sending unit? I suspect, like many parts on this car, Ferrari stole it from another car such as a Fiat or Mercedes. Any help would be appreciated.