You can easily install SoftOne pixel (Wix Integration)

• Log in to your Wix account
• Select Edit Site
• Click Wix App market
• In the tool bar, select HTML and choose "HTML iFrame/Embed"
• Add it on to site
• A window pops up. From the Mode drop-down list, select the HTML code. Copy/paste the JavaScript Redirect code into the box labelled "HTML / embed code"
• Update
• In the checkbox, inspect the "Show on all pages"
• Save & Publish
• In the popup, switch off "Display in the mobile action Bar on my mobile site" and click on OK.

That's it! you are ready to go.