S class



That is where you went off track.
The 86 schematic can not be used b/c they used a 105/115 temp sw.

The '88 and up do not use the 105/115 sw...they use a two wireThermistor sensor that triggers the ACC Panel at 105 cut-in, and that triggers high fan. The R factor decreases as the temp increases .. [ neg./ coef. thermistor] ..that is what allows one to change the cut-in of high fan by bridging that sensor...the R in parallel drops the Total R of the sensor, so you get a lower cut-in.
But you were absolutely correct on all other aspects and I comend you.........................Archieves

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Actually, The 115 is a/c compressor cut-out if temp gets to 115.
The fan is the 105 section of that sensor.

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A Dalton