For anyone interested, I hooked up my doorlocks to my burglar alarm this weekend. Works really cool.
I always got tired of explaining to passengers not to press down the lock and hold the button on the outside door handle, then, "Oh, it doesn't work like that?" "No, it's 35 years old, they didn't do this model."
Now, it's just, "shut up and get out and I'll lock the doors with my pushbutton!"
I got the alarm from RadioShack, Bulldog 911, on sale for $29.99 with all these features I couldn't believe, so I got it.
I noticed it had a plug for keyless entry, so I went to the Bulldog site and bought the doorlock solenoids for 10 bucks each. Relayed them up so that they use the pulse from the alarm to lock/unlock (these are ground pulse, some are +12v pulse, so relay them up accordingly).
Whole shootin' match = less than $60 for alarm w/keyless entry.
Downside = had to drill two tiny holes in each inner door skin below door latch. Used factory black-painted sheet metal screws to attach doorlocks inside door so it is very hard to notice. I do, but nobody else does. Maybe somebody else has a better idea for attaching solenoids inside door.
Be a good dad to your kids and phone your mom twice a week...