If I'm reading your post correctly its my understanding that you have the ignition switch disconnected from the back of the ignition lock cylinder and you are using a screw driver to turn the mechanism inside your ignition switch? If that's so, its no different then having a key in the ignition. Turn it once and the glow plugs light up. Turn it another click to engage the starter. That's it.

The vacuum lines you see should be a solid brown line and a brown line with a blue stripe (I'm going off of memory here). All they do is apply vacuum to the shutoff valve on your injection pump to stop the flow of fuel when you turn the key to the off position.

In summation, your car should start and stop just like it did before assuming everything was working beforehand.

Scott

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)