If the jumper has been removed, then the control is working in the low voltage circuit. Black should be 120v in, White the 120 going out to the fan, and the red or limit wire is (should be) in the low voltage control circuit. Have you looked at the wiring diagram for the F and L Control? If not I will provide a link for you.
https://customer.honeywell.com/techlit/pdf/69-0000s/69-0117.pdf
Hope this helps
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