publication:

Meteor.publish("productMap", function () {
	return ProductMap.find({});
});

Subsctiption:

Router.map(function () {
	this.route('insert', {
		path: '/insert',
		template: 'insertProduct',
		waitOn: function() {
			return
			 Meteor.subscribe('productMap');
		}
	});
});


Template helper:

Template.insertProduct.helpers({
  productList: function() {
    productList = ProductMap.find({}).fetch();
    console.log(productList)
    return productList
  }
});