viper 5701 into 2003 f250

I am trying to instal a viper 5701 into my 03 f250 diesel. I would love some help with two questions. 1) I have power locks but not a remote keyless entry so my door locks are 12v+ when the alarm gives off a negative pulse. The wire diagram says i have type c 5 wire and i have seen on this site how to wire in the relays for such a thing but my question is there a module I can get from Directed that will wire in llike the 452M or the 452T that will have the set up i need with the diod so the powersaver mode doesnt activate the alarm??  2)  Also there are many that say to use the dome supervision wire to monitor the door triggers but again my dome light wire is 12v+ and the alarm says the dome supervision wire is a negative output. what do i need to make this work?? Any help would be very much appreciated.  I have done so much searching and cant find the answers to these two questions. Thanks in advance

when i cut the wires from the door locks in the kick panel am i correct in assuming the one that has 12v when i push the lock/unlock switch the one from the switch? and the other end of the cut wire is to the lock?