By "tracker", do you mean a surveillance device? If so, doubtlful as my whereabouts are usually confined to my desk or my recliner. .
And no aftermkt alarm. Originally, there was an old cell phone installed in car, but I removed it upon purchase.
Ron: are you referring to fuse inside Becker unit? Or, fuse in kick panel fusebox?

I'll search for info on Becker drain.
RadioTek - will eagerly await your article.

Thanks.

Ragtopper
1982 380SL