Greetings, need your help.. With my 406 (see Sig.) the speedometer went on strike again. When I go, it jumps immediately to 30km/h & so it always shows 30km/h too much, showing run perfectly straight up. Yes ok, I thought to myself easy thing, build it out & solve the cold soldering again. Nevertheless, I have the same problem as before… Then I changed the speed sensor on the gearbox (…What costs the world ) Nevertheless, my test remains The ServiceBox shows that my vehicle is a speed converter or a “detector tempomat housing”, which is supposed to convert the signals of the transmitter. TN: 1929SJ I ordered the part, and I want to install it straight, but I just don’t find the shitty part. I already found out that it should be behind the manual drawer. Okay. Expansion, Zv control unit, fan unit, clamped air motor & still a box but not that I have here in front of me ^^ I am actually d he thinks that this part doesn’t have, because I don’t have a cruise control, but if that’s what the ServiceBox tells me about my VIN will be like that …. I need your help. Where does this thing sit, and if I don’t have what else the mistake can be greetings