Dump out the old pins insert the new key and use tweezers or small needle nose pliers to match the new colored pins to the color code on the special instruction sheet.
Replace door lock keep same key.
A kwikset key can interchange with several other lock manufacturers.
If all of your locks are in good condition and you don t expect to be replacing all of the locks at the same time there is still the possibility that a locksmith can change the pins in your locks to match a single key.
Not to be ageist but sooner or later that guy is going to retire.
For instance if you buy a new one made by weiser titan dexter dorex to name just a few you can have your local locksmith rekey the new lock to your old key for a small fee.
Once the new pins are in reverse the steps to reassemble the lock.
Again your locks must match.
Use smartkey technology to match the lock to your existing housekey.
They must be the same brand and model and use the same number of pins.
Insert the pins and reassemble the lock.
Replace a broken double cylinder deadbolt lock with a new one.
Stannius jun 19 at 15 48.
In other words if your old key will enter the new lock it can be keyed to your key.