Google Map İcon Custom

<script type="text/javascript">
      var locations = [
    ['İstanbul Şube', 'Ümraniye, İstanbul', 'Location 1 URL'],
    ['Genel Şube', 'Dulkadiroğulları, Kahramanmaraş', 'Location 2 URL'],
    ['Gaziantep Şube', 'Şehitkamil, Gaziantep', 'Location 3 URL']
];

var geocoder;
var map;
var bounds = new google.maps.LatLngBounds();

function initialize() {
    map = new google.maps.Map(
    document.getElementById("map_canvas"), {
        center: new google.maps.LatLng(41.0044911,29.1794592),
        zoom: 13,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    });
    geocoder = new google.maps.Geocoder();

    for (i = 0; i < locations.length; i++) {


        geocodeAddress(locations, i);
    }
}
google.maps.event.addDomListener(window, "load", initialize);

function geocodeAddress(locations, i) {
    var title = locations[i][0];
    var address = locations[i][1];
    var url = locations[i][2];
    geocoder.geocode({
        'address': locations[i][1]
        
    },

    function (results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
            var marker = new google.maps.Marker({
            
              
                icon:   "https://twitteraraclari.xyz/assets/img/favicon.png",                              
                map: map,
                position: results[0].geometry.location,
                title: title,
                animation: google.maps.Animation.DROP,
                address: address,
                url: url
            })
            infoWindow(marker, map, title, address, url);
            bounds.extend(marker.getPosition());
            map.fitBounds(bounds);
        } else {
            alert("geocode of " + address + " failed:" + status);
        }
    });
}

function infoWindow(marker, map, title, address, url) {
    google.maps.event.addListener(marker, 'click', function () {
        var html = "<div><h3>" + title + "</h3><p>" + address + "<br></div><a href='" + url + "'>View location</a></p></div>";
        iw = new google.maps.InfoWindow({
            content: html,
            maxWidth: 350
        });
        iw.open(map, marker);
    });
}




        </script>