Hi I have a 2000 B42 with a CALIRA 418 electric distribution panel. The ammeter does not work. Can anybody help with the following? 1) the shunt resistor has been disconnected at some point. The small blue/white wires for the milli amp take off are still wired in and are across the ammeter via two PCB,s I have traced this out okay. Can't quite figure out where the main 12vdc for the shunt load would have been connected. My first thought would have been in the neg bus line but that would then show all current even if the Bow thruster was on, so that cant be right, at present it has no large wires on it.
Also 2) what does the green LED do, and 3) what does the push button switch do , Both are marked with a diode symbol and are under the ammeter. I would assume that the pushbutton changes to read Bat 1 or Batt 2 as that is that is marked up, but this would then require 2 shunts. Once I get the shunt wired in I am sure I will work it all out. Any advice would be good. I have traced the entire circuit and have it all drawn out, but an original Circuit diagram would be good. My paperwork form the German factory does not show this.
