Replaced iPhone 6S Plus charging assembly

Hello, I recently replaced the charging and auxiliary port assembly on my iPhone 6s plus using third party replacements parts. After replacement, the charging port works (the reason I replaced to begin with) however my auxiliary port plays out only the right half of the output. Is this due to a loose connector or faulty part? I've already tried wiggling the aux cord around to try and get contact for full audio but I don't even hear a partial buzz to indicate it's possible. Thanks!