I just got my daughter a vento avalanche ex 100 it's a project bike that didn't come with the key where can I find a new wiring harness for it and find other parts??

 

Just googled it and Vento are still going but now seem to only sell motorcycles. Bizarrely, https://www.vento.com/ seems to be in Spanish! Your machine apparently uses the Minarelli two stroke 90cc engine. Polaris used it and Apache still do (or did until recently) Don't go for a new loom. I insist, if you can fit a new "universal" loom, you could have fixed the one you have. Key switches simply un-plug from your loom. Trick is knowing which replacement key switch is right and which wiring colours go where. Apache or Polaris parts and wiring diagrams may be the way to go.