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An easy way to get a line through the conduit is with a vacuum cleaner.
Make a tiny parachute with light weight plastic like a shopping bag. Tie a strong, light weight string like kite string to it. Insert the parachute and string in one end, attach the vacuum to the other end.
You’ll be surprised how quickly the string is sucked to the other end if all goes well.
Then you can use the light weight string to pull the wire.