How to replace default registration form with wholesale registration form?

Add the following script before </body>

NewSignupPageLink variable contains Wholesale Registration form link, You can change it if needed.

<script>
var NewSignupPageLink = "/pages/register";
if(document.querySelector('a[href*="/account/register"]') != null){
document.querySelector('a[href*="/account/register"]').addEventListener("click", function(e){
 e.preventDefault();
 window.location.href = NewSignupPageLink;
});
}
if(window.location.pathname == "/account/register"){
 window.location.href = NewSignupPageLink;
}
</script>