Tach, temp and fuel are good, but speedo/odo and naturally econo are dead, never seen them alive. I've already bought the 3 piece gear set and had them replaced. When tested at the bench, it works fine. I thought it was too delicate a job to handle myself, but these days I got so used to it that pulling the cluster apart takes less than 30 seconds, and disassembling at home takes another 60 seconds.
After reading quite a many questions and answers here, I lined up the usual suspects. Sanded and cleaned the connections of fuse 6 and installed a new fuse, borrowed and plugged an intact diff sensor from a friend, cleaned the sensor plugs, measured the connectivity of the line from sensor to cluster, still nothing.
VIN says my euro 525i was produced in Feb 1982. Upon disassembling, I found out that the tach is date stamped Jan 1982.
But the main frame and speedo are dated Oct 1984.
Someone has clearly fiddled with it (and clumsily too, the SoB bent the needles. I somehow lined up the km needle, but tach needle is a mess. Haven't searched about that yet, I'm sure someone else has dealt with this kind of stuff before).
Anyway, I thought it's an electrical issue within the speedo, so cleaned and checked (with an ohm-meter) the speedo board just to find out everything OK. That's when I noticed that the four pins on the SI that connects to the speedo don't match with the sockets there. Only one of them plugs in.
As far as I see, speedo has no other connection whatsoever, so this must be it. I couldn't find any info on which pin brings what. No, I don't have a Bentley (yet).
What do you suggest I do?
