where can I buy a gladhand lock?

uline has them

 

Try a TA shop. Think that is where I saw one before.

 

Why you need one?
You know most of them are junk, they're not going to keep anybody from taking your trailer if they really want it.

Did you even try Googling it?
Ton of places that sell them, here's another one.

http://www.grainger.com/product/Glad-Hand-Lock-5ZVP3

Even Amazon has some of them.
http://www.amazon.com/WAR-LOK-Trailer-Glad-Hand-Lock/dp/B002FV45ZI

 

sold at any truckstop. usually.

 

Didn't even know they sold them at TS.
Never needed one.

Easier then ordering online even.

 

Most of the truckstops have them. Like others have noted, they are just cheap pieces of plastic that will slow someone down for maybe a second or two. Certain kingpin locks are more effective at slowing down someone determined to take your trailer, but will never stop them. If you can install a device, someone can remove it. All this will do is send them to find something easier to take.

 

EXACTLY!!!

All locks are good for is to keep an honest man/woman honest.

 

You can get them at most of the major truckstops I think. They will be somewhere around the kingpin locks. If its a T/a or Petro, they may be in the parts dept. in the shop

 

That is the whole idea with all type of security. If somebody really wants it, they will find a way to get it. But crooks are relatively lazy, and usually in a hurry, so make your trailer a bit harder to steal than the one next to it.