Your description is a little cryptic, but if you're blowing the fuse which feeds the bedroom lights AND the A/C doesn't work, I would check the wiring on your bedroom thermostat to be sure that all the wires have wire nuts on them. If you're electrically inclined, I would start there to see where there's a short.
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Karl - Southeast, NY
2020 377 RLBH
2018 Ram 3500 Mega Limited 6.7L Cummins w/ Aisin
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