Goodday to all, i have an 1981 280e w123, that i recently aquired. The PO for some reason unknown to me removed the original transistorized distributor together with the ICU, coil resistors and coil. Instead he retrofitted a ordanary pionts and condenser distributor and coil, with 1 resistor.

i have an working ICU and transistorized distrubutor with the correct coil and 2 ignition resistors....But the wiring are totally hacked by the PO

i need help wiring the ignition control unit, i know that the green wire from the distrubutor goes to the ICU but on the ICU there is a plug with 4 wires i need to know where this wires must go.

I also need to know how to wire the resistirs, i assume that the wire from the soleniod on the starter goes to one resistor(which one?) and swithed 12volt from the ignition key goes to the other resistor?? and from there i dont know???

please help???

Is that a USA version car?
You can e-mail me & I can supply that wiring info.

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OK I sorted out the wiring of the ignition control unit thanks to MBDOC!! The only remaining problem is i need to no were to plum in the ballast resistors?

logic tells me that the wire from ignition switch goes to the 0.6 ohm resistor and the wire from the starter giving 12v while cranking goes to the 0.4ohm resistor, from there the two wires go to the + coil???