I am trying to figure out what this part is - the pale orange part in this picture with wires attached at each end. It attaches in engine compartment right behind the driver side headlight in my 1987 300E with a small metal bracket (bracket not shown). It is made of some kind of ceramic or something and mine is badly cracked and corroded at one of the connections. Some kind of resistor? I'm thinking this may have something to do with the a/c electrics?

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2005 Mercedes C230k sport sedan, 6 speed
1987 Porsche 924S - 968-engined track car