door lock
 

when i bought my used 1983 hi lo it did not have a key to lock the door. i thought well that will have to be replaced. yesterday before i bought a new lock, i checked my used keys. yes i save my old lock keys, anyways, was down to my last key, the one i use on my hitch lock. bingo, it fit and worked in the lock. just an fyi if you lose or do not have a key.

Glad you found a key that works.
 

Be sure to lubricate all your exterior locks. We bought a can of spray from our local lock smith. We even use it on our truck and truck cap. Welcome to the forum.