I have done 83 SD motor into 85 SEL body.

Ignition switch, Simply remove gasser ignition switch, and replace with diesel, then change tumbler over. 2 hour job max. ive done it about 3 times, once it took me about 2 hours to do it, once it took me like 20 minutes.
Run vacuum lines into car for shutoff switch,


Gassers have a fuel pump which should be removed, you also have to remove the little plastic flap inside the filler neck or you will not be able to put the diesel nozzel in.

Try to simplify the wireing, get rid of the EGR, i dont have specifics on your car but it is going to take alittle doing to get the glow plugs working correctly.


On the W126 the diesel motor mounts work just fine however one of the brackets that mounts the lower part of the engine shock is on the wrong side, so i didnt mount an engine shock on the driver side.

I never got the tach to work on my SEL after the swap, but i never really tried to hard.

Goodluck.

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D