Hi Ferarristi, I just got a 1982 Ferrari 400i A and my horn is not functioning. Trying to do some troubleshooting, and I am stuck at the no. 1 step (besides checking fuses) - locating horn compressor. According to manual, oil drops should be applied into the blower unit as maintenance. I am fully lost to where the location is. I did not find it behind the bumper grill. Thanks for any suggestion.