Disable Homelink when truck off

[BML325]

Does anyone know a way to make the homelink transmiter become disabled when you turn the truck off, so no one could break in and open my garage door?

 

[CaptainObvious]

I take it you park outside the garage?
I wouldn't worry too much about it. I keep an opener in my truck (although I park IN the garage) and if someone wanted to they could steal it.
If you're that concerned unplug the garage door opener or put it on a switch.

 

[MattHarrell]

I don't have one myself but does anyone know if it requires power to store the codes? If not then you could cut the hot line where it exits the headliner and route it over to the overhead console to that switched power line.