Our summer are hot.
So while we're in our winter, which is warmer than many countries summer, I want to get through my list of obvious things to check.
I've replaced the radiator, with another Behr, and the thermostat at the same time.
I bought a K6JFR cool harness to bring the auxiliary fans on at a lower temperature. The fans don't seem to turn on any earlier.
The car still gets over 105C. The only time I see the auxiliary fans turn on, is when I turn on the A/C.
I want to know if this is the connection that is mentioned in the previous post by nestorb98. I've tried it in both positions and it seems to make no difference, I need to check the relay that's been mentioned, after that I'm out of ideas.
As there's no temps marked on the gauge between 80C and 120C, other than the dash which I assume is 100C, then I don't really know what temp it reaches.
It's never got close to 120, but has got over 110, at a guess.

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1989 W124 260E