Copied from this data from my answer to this thread:
http://www.peachparts.com/shopforum/showthread.php?t=80453
Hello Everyone
MB Diesel Kill "Antitheft".
Note:
If you have a secondary pump underbody or in the fuel tank this system will not work.
Install a three way T in the fuel suction line, the tap leg must point at the ground to aid sucking air when valve is open.
Tap line must be as large or larger than fuel line.
Route the atmospheric/suction end of the air feed/bleed valve tube into the air intake filter housing; this covers the sucking hissing if a thief steals the car.
Location of the valve is a personal/security matter.
I have mounted the valve in the passenger compartment, under hood and in trunk.
I am working on the other system now. RE: a secondary pump underbody or in the fuel tank.
I have seen far too many altered systems to trust that someone may not have a booster pump added.