If you add a resistor (1.1kohm I think) across the prongs, your fans will cut on at 92° I think. Has to be the right resistor though or they may turn on earlier than 92° But if you're running hot you may want to find the actual cause first. If there is no problem and you just want to run the engine cooler I'll post a link to a thread you can check out.

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1990 190E 3.0L