This is driving me insane. I have got everything working on this car except this damned cruise control. Spent today messing with it. Checked the 14 pin plug to make sure it has 12V coming in and the steering column switch and brake switch was good. All checked out. Re-soldered every single point on the amplifier board. Installed a new actuator when I replaced the engine mounts. Swapped the speedometer Hall Effect sensor off the parts car today. Still NOTHING. Doesn't even try to engage. The ONLY thing left to try is another amplifier unit, but the parts car is a 93 300e M104 with ARS, so it's not the same as my 92 300TE. Anybody got an amplifier?