Q: air conditioning and heating panel does not work on 1990 GMC 1500 Pickup

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The previous owner hard wired the blower motor to a switch.
we rewired everything back to original and it still did not work. the panel has been tested and works fine. Any ideas?
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