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whoa. Stop.
If you have one of those metal boxes wired into your car along with 2 balast resistors, there are three different ways to wire it depending on the kind of box.
The engine manual cites two markers to go by.
- The box number. It ends with 014, 015 or 016.
- Is the coil wired directly to ground on one side or to the box?
In all cases, The resistor with the blue band (0.4 ohms) is tied to the ignition on one side and the starter by-pass on the other. That allows the resistor to be bypassed while starting. You can demonstrate that with a meter while you turn the key (and have an assistent turn the key to start mode after that).
The 2nd balast has a silver band (0.6 ohms) and it connects the 1st resistor (at the starter by-pass leg) to one of two places, depending on which box is in the circuit.
There's always the chance that box is bypassed by the PO. If that's the case, you should have a gold band resistor (0.9 ohms) and a black bodied coil. The coil with the blue body has 2x the number of windings as the black one and was designed to be used with the transistorized switching unit (that box). However, most people that bypass the box don't also replace the coil and resistor and just make their bad situation worse over time.
Another variation of rewiring is to use a resistor with a red band (0.15 ohms) and a coil with a red case. That ignition is stock for the M115 (4 cylinder motor) and works fine, but not with the box.
May I suggest getting the CD for the car? It's about 30$ from mercedes. However, you need somebody in the states to buy it for you and mail it on, as mercedes in the US won't ship it overseas. There should be a supplier in Europe to sell it to you, but I don't know who they are (and if you find out, please share that info here).
-CTH
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