Im pretty new to the forum so first off I'd like to say hi to everyone. As you can see from the heading that my rev gauge isn't working. I sent it of to repair company and they couldn't find anything wrong with it. I've checked the 3 wires leading to it and they all have continuity. The signal wire (grey/green i think) from the CDI is giving 13.7v at idle rising very slightly while revving the engine and the other power wire (green/red) has a steady 14v while the blue is common ground 0v. This pretty much leads me to believe that the gauge is kaput. Correct? Also I am aware that this is a common failure so I wasn't totally surprised but wanted to be sure. My only remedy is to buy a replacement. I have found a brand new gauge but its 160 euro. Pretty steep. I have also found a used one which is 59 euro. Not too bad. The problem is that they have different part numbers, first one is 8000 87087 which is the correct one for my bike and the second one is 8000 92334. Are these units interchangeable? Heres a link to the parts catalogue. http://www.husqyparts.com/en/model/2004/sm_610s/oem/22334
