Lojack question

[h769821]

I have a Lojack system installed in my 2006 E350 W211.
Problem is, the battery often runs down when I'm away for long periods of time.
I wish I could just disable it when I'm away (a trickle charger is not a convenient option), but the company refuses to tell me where it is.
My quick-fix solution is to disconnect the 2 batteries, but I'd rather have a switch that would allow me to disable the Lojack when I want to.
So the question is, does somebody have a picture of what it looks like so I can look around for it?
Thanks in advance.