Meade, I used one of those Auto-Zone made-in-China cheapies when my original failed at Carlisle one year. It worked for about a year and then IT failed. I replaced it with a nicely made Bosch unit that is probably still in the car. Those cheap ones are useful for emergency repairs but are best kept in the tool box.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .