Milton Credit Union?

[bbdowns124]

I grabbed the vault key from the dead guy at paradise meadows farm but when I go into the Milton CC, it doesn't work. How do I get the bank vault 3 passwords?

[Fuarian]

The key from the guy at the farm unlocks a box in the house. You need to search around the house for the door key and once inside search for the Bank Deposit Box key. Hint; fireplace.

To open the vault you need to search the bank for the manager's house key and then search the manager's house for the vault code. 

[JAFO]

@Fuarian, some spoiler tags might be in order.