Does anyone know the correct wiring set up for the OEM Sanden compressor for 1994 348 Spider? I sent my OEM compressor off to Sanden in the states for a factory overhaul. I remember taking the original unit off the car and there was a small diode attached to the wiring, but I cannot find any reference to it in Sanden literature OR in the Ferrari literature. I still have to original diode, but it is a common item to replace if it checks out bad. It must have something to do with preventing back flow current from the magnetic clutch or something. Right now I have a cheap Chinese compressor installed in the 348. I bought it from Ricambi a few years ago. It worked OK for a few years, but the seals dried up and the refrigerant has long since dissipated. I want to return the original Sanden to its proper place, but I want to make sure that diode is properly wired in. The Chinese unit did not appear to have this diode. Can anyone shed some light on this? Thanks in advance, Marbroman
Sanden compressor diodes are mentioned in this document: https://www.sanden.com/objects/Sanden-sd7-types.pdf Image Unavailable, Please Login They seem to be standard on some types of Sanden compressors. The document shows the orientation of the diode, but no details on the diode itself. Would you have a photo of the old diode?
Some Sandens have the diode within the clutch solenoid connector. Whether the 348's compressor originally has it or not, it is good to have a diode connected as shown in the Ian's post above (or in series if there is just one wire going to the compressor clutch). Image Unavailable, Please Login
