alarm & remote starter

[tower]

I am attempting to install an alarm/car starter on my 95/E320. So far I have the alarm working and the remote starter feature, but I am at a quandry how to install the door lock features. I have read the enclosed faq, and understand it, but I require wire locations on my MB. I could easily hook up wires to the convience or vaccum pump under the rear seat, but I cannot see how to route the wires to the alarm control unit under the steering wheel. All I need is one of the door lock wires to make the modification. Is there a door lock wire under the steering wheel? Where or how do the wires route from the door to under the rear bench seat (I don't want to be tearing up the carpet in a wild goose chase)?

Your knowledgable responses would be greatly appreciated.

Ron