Разложить подсказки по одному полю

var $region = $('#shipping_address_zone_id');
var $city = $('#shipping_address_city');
var $address = $("#shipping_address_address_1");
var $postal_code = $('#shipping_address_postcode');

var block_suggestion = '';
block_suggestion += '<div class="form-group">';
block_suggestion += '  <label for="suggestion_address"><strong>Поиск адреса и автозаполнение</strong></label>';
block_suggestion += '   <input id="suggestion_address" class="form-control" type="text" placeholder="Поиск адреса и автозаполнение">';
block_suggestion += '</div>';

function showRegion(address) {
    var findRegionValue = address.region.replace(/\s{0,1}[-\/].+/gi, '').toLowerCase();
    if ($region.length) {
        $region.find('option').each(function (i, o) {
            if ($(o).text().toLowerCase().search(findRegionValue) >= 0) $(this).attr('selected', true);
            else $(this).attr('selected', false);
        });
    }
}

function showCity(address) {
    if($city.length) {
        $city.val(join([address.city, address.settlement]));
    }
}

function showStreet(address) {
    if($address.length) {
        var addressValue = [
            join([address.street_type, address.street, ], " "), 
            join([address.house_type, address.house], " "),
            join([address.block_type, address.block], " "),
            join([address.flat_type, address.flat], " ")
        ];

        $address.val(join(addressValue),);
    }
}

function showPostalCode(address) {
    if($postal_code.length) {
        $postal_code.val(address.postal_code);
    }
}

function showSelected(suggestion) {
    var address = suggestion.data;
    showPostalCode(address);
    showRegion(address);
    showCity(address);
    showStreet(address);
    setTimeout(function() {
        reloadAll();
    }, 700);
}

function join(arr /*, separator */ ) {
    var separator = arguments.length > 1 ? arguments[1] : ", ";
    return arr.filter(function (n) {
        return n
    }).join(separator);
}

$('#simplecheckout_customer').after($(block_suggestion));

$("#suggestion_address").val(
    join([$city.val(), $address.val(), ], " "),
);

$("#suggestion_address").suggestions({
    token: 'Ваш токен',
    type: "ADDRESS",
    onSelect: showSelected
});

Если у вас отличаются id полей, замените на свои

Это то что указано выше, пример:

var $region = $('#shipping_address_zone_id');
var $city = $('#shipping_address_city');
var $address = $("#shipping_address_address_1");
var $postal_code = $('#shipping_address_postcode');