Chipmunks in house are chewing the wiring

Repair the damage.

You seem to be far too fixated on animated chipmunks, try using a peer to peer downloading service to search and acquire your desired movie: such as bit torrent, and then take your attitude elsewhere.

Either the speed switch is history or there is a belt problem. Get rid of it.

Yes.
Also, the chipmunk may have chewed other wires which you are not aware of.

You need a professional here. Once this has been repaired, I would suggest running the wiring to the outdoor unit inside some sort of piping to protect it.

HI there well i think what you dog chewed on was the thermostat wires. if you tell me the colors maybe i can help you out.
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Hi:
Unfortunately, there have been lots of cases of rodents chewing on car wiring. In the last five years or so, wire manufacturers have used soy beans as an ingredient in the insulation coating on automobile wiring,and it seems it is tasty to our small friends. Depending on where you park your car , will make you succeptible to it happening again. The Mom of a friend of mine had $1000 worth of damage to her car wiring, as some chipmunks had a field day with her newer car. She ended up placing some moth balls around where her car was parked, to keep the critters away. If you have wildlife near your car, look out!

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by rats, mice, squirrels, etc...
Makes one gallon when mixed
and protects the surface of areas used for nesting.

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Rataway fragrance is not a pepper spray.

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Again... Rataway fragrance can be used around children, pets, and service personnel.

What is Rataway Fragrance?Rataway fragrance is a spray that is very offensive to wild animals such as rats, mice, squirrels, rabbits, raccoons, dogs, cats, horses, skunks, and monkeys. Rataway fragrance is not offensive to humans.

You need an electrician be careful