Need help identifying remote start system
So I was fiddling around under the dash today trying to get my horn to work and I noticed these boxes that said Datalink RS232 Port, ADS-AL; and the other one said Directed Electronics 4x03. I have gathered that these are both pieces to a remote start/aftermarket alarm system for my truck. What is odd is that when I bought the truck it didn't come with any kind of remote for the system, the seller also made no mention of the truck having remote start. So I basically have no information about whether the system works or not, if anybody knows anything about a setup like this I would really appreciate it.
I don't know all the pieces that are involved in a complete system, however I do know that the 4x03 one is called the brain, which runs all other operations. That is basically the extent of my knowledge on the subject, I have no idea what the datalink box does other than it is a part of the system. There are a couple shops that deal in this type of stuff around me but i figured I'd ask you all first in case anyone knows about this type of stuff. Thanks,