Authorize .net removed the iFrame code from simple checkout and I have spoken many times to Wix and and they have put me in touch with you.
I need to disposition the code as a direct HTML code into my wix simple check out, I have the correct code but need help in the application.
You might be able to use an HtmlComponent (it depends on the embedded code). See the article Working with the HTML Element in Wix Code for details.
A more secure way to handle web service requests is by using backend (server-side) code. Using backend code you can secure your passwords, API keys, and other secret information. The article Accessing 3rd Party Services explains how this is done. Check with your service provider is REST access is available.