hi i have a problem with my dash seems it has all the earths and power but speedo,tach,oil,water temp dont seem to be working correctly/not at all
have tested the back of the tach has three screws with one is earth and the other two come from the dash computer and i am not getting those which means something in the computer is not working???
has anyone got and information regarding the exact pin outs what they are ment to be and function and also how the computer in the dash works ie postive etc wires for it
any help would be great

 

urgently need some help, want to talk to any one who has deloomed an fd or rewired the factory guage cluster.

here is a pic of what ive done so far..