1:20 - First 3 combination lock in Folgunthur
3:15 - Second combination lock in Folgunthur
6:45 - Bonus lock in Folgunthur
8:03 - The 4-way combination lock in Geirmund's Hall
11:05 - First combination lock in Saarthal
14:00 - Second combination lock in Saarthal
16:54 - First combination lock in Reachwater Rock
18:24 - Second and last lock in Reachwater Rock
Folgunthur - Near Solitude
The first lock is Snake, Fish, Eagle, as shown in the room besides it.
The padlock code is Eagle, Eagle, Dragon. The code shows on the claw.
Here you meet Mikrul Gauldurson. I don't think he disarms you. Kill him, take the Gauldur Amulet Fragment, learn a Word of Power, take other stuff and proceed to the next dungeon.
Snake, Eagle, Snake, Fish - bonus
Geirmund's Hall - Near Ivarstead
Eagle & Fish on the left
Fish & Snake on the right
Kill Sigdis Gauldurson (be careful bring extra weapons and use your secondary weapons, not your best. He will most likely disarm you and take your weapon. It often glitches out so that you lose your weapon, and won't get it back), take amulet, take other stuff and proceed.
Saarthal - Near Winterhold. To get here you must enter The College of Winterhold. Listen to Tolfdir and then do what he tells you to do, and you will start the quest Under Saarthal. Go to Saarthal, meet up with the class and then proceed. Aventually you'll get to the lock.
Eagle & Snake on the left
Fish & Eagle on the right
Kill the Draugr Deathlord. This one doesn't give you an amulet fragment. Kill it and proceed.
Start on the left
Snake & fish on the left. They spin eachother, so doublecheck when done.
Fish & eagle on the right.
Here you will face Jyrik Gauldurson. Don't attack it at first. Keep it busy till Tolfdir drains some of its powers, and signals that you can attack it. I don't think this one disarms you - It didn't disarm me. Kill him, take his amulet fragment, learn another Word of Power, take some other stuff and proceed.
Head to Reachwater Rock near Markarth (between Markarth and Rorikstead) and reforge the amulet.
First padlock is Bear, Fish, Snake. The code shows on the Emerald Dragon Claw that you just picked up.
The next one is Eagle, Eagle, Dragon, just like in the first dungeon we went to (Folgunthur). It's the same claw, therefore the same code. The code shows on the claw.
Proceed through the dungeon. Prepare for a battle against all three of the Draugrs all over again. You don't have to fight them all at the same time, but there's Draugr Thralls there aswell, making it more difficult, and the main Draugrs may also disarm you, so you might lose your weapon. Be careful.
Place the Gauldur Amulet Fragments on the Amulet Pedestal. This will summon the Draugrs. Kill them, and then move back to the altar, or perhaps the Pedestals. Congratulations, you can now retrieve The Gauldur Amulet - one of the best amulets known in the game! It yields 30 more Stamina, Health AND Magicka! Also, above the altar, or pedestals, there's a grave where Gauldur lies. You'll find a good load of money there.