Your gauge might be a little off too. At an indicated 210* my engine temp is actually 195 according to the cts.
Temp sender for the gauge is in the very back of the head, so it'll read a little high compared to the cts which is in the middle of the block.
You can splice into those two wires going to the temp switch in the radiator with no worries, its a low amp relay trigger circuit. Put a switch in and you can turn the fan on whenever.
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