For updating URLs at http://theldssinglessite.com/YSAsingleswards.html

inject-jquery.js

var js = document.createElement('script')
  ;
js.src = "//code.jquery.com/jquery-1.11.0.min.js";
document.head.appendChild(js);

update-in-place.js

// For updating URLs at http://theldssinglessite.com/YSAsingleswards.html in-place

$('a[href^="https://secure.lds.org/units/stake"]').each(function (i, el) {
  $(el).attr(
    'href'
  , 'https://www.lds.org/maps/#m=google.road&find=stake.ysa:'
    + $(el).attr('href').replace(/.+-(\d+),.+/, "$1")
  );
});
$('a[href^="https://secure.lds.org/units/home"]').each(function (i, el) {
  $(el).attr(
    'href'
  , 'https://www.lds.org/maps/#m=google.road&find=ward.ysa:'
    + $(el).attr('href').replace(/.+-(\d+),.+/, "$1")
  );
});

update-singles-ward-urls.js

// To get ids to try with
// https://www.lds.org/maps/services/layers/details?id=234400&layer=ward.ysa&lang=eng
var maps = {};

$($($($('table')[2]).find('p table')[1]).find('tr')).each(function (i, el) {
  var stakeHref = $(el).find('a[href^="https://secure.lds.org/units/stake"]').attr('href') || ''
    , wardHref = $(el).find('a[href^="https://secure.lds.org/units/home"]').attr('href') || ''
    , stakeId = stakeHref.replace(/.+-(\d+),.+/, "$1")
    , wardId = wardHref.replace(/.+-(\d+),.+/, "$1")
    , newStakeHref = 'https://www.lds.org/maps/#m=google.road&find=stake.ysa:' + stakeId
    , newWardHref = 'https://www.lds.org/maps/#m=google.road&find=ward.ysa:' + wardId
    ;
 
  maps[stakeId] = maps[stakeId] || {};
  maps[stakeId][wardId] = true;
  
  $(el).find('a[href^="https://secure.lds.org/units/stake"]').attr('href', newStakeHref)
  $(el).find('a[href^="https://secure.lds.org/units/home"]').attr('href', newWardHref)
});