The modulator valve is located on the LH side of the tranny and has a vacuum line going to. After replacing you have to set the modulator pressure by connecting a gauge to the tranny, removing the cover from the modulator valve and turning adjustment bar underneath. With out pictures its hard to show how the gauge is connected.
To be quite honest if you really have done the tests required to diagnose the modulator than setting the pressure should be the easy. If you have more specific questions feel free to add answers and I will do my best to help.
Sorry my answer could not be more complete.
how to repair a window motor on a 380sl mercedes
How do you replace trunk lid springs on a 107 body 1983 mercedes 380sl?
A 380sl does not have a sunroof, it has a hard top.
The Mercedes Benz 380SL was manufacturered from 1980-1986. It had a 3.8 liter V-8 engine.
there are 2 different types of trans fluid. one is for Fords, the other type is for all other cars....
If the car won't move when it's in gear, check the transmission fluid level. Check to see that the parking brakes aren't stuck.
Check your fuses under the hood.
under glove box by passenger floor mat
Fuel pump is under right rear of body