1994 Chevy S10

I have a 1994 S10 that had a PL-10 Carbine alarm installed for keyless entry only, in the drivers door panel(previous owner). It failed and I want to replace it with an Autopage RF1055KE.  It also had an add on relay module. My understanding is the vehicle is a 5 wire reverse polarity set up.  I don't understand the wiring colors on the trucks drivers door lock switch.  Dk blue, lt blue, black, black, pink.  Also the 5 wire relay modules have 8 wires.  I understand relays.  5 wire (N.O.87, N.C 87a. , Common 30 , coil 85, coil 86)

5 one on connector and three on the other , The old set up didn't use the small +12v on the three wire plug.

I am waiting on a new relay module I ordered from Commando( http://www.commandocaralarms.com/itemdetails.asp?Productid=553) I am hoping that when the relay module arrives I can sort out some of this out.  Can anyone clear up my confusion?

All you needed was a couple of relays ( instead of the relay module ) and hooking it up to the relays like this digram: 5 Wire Alternating 12 Volts Positive Door Locks

Are you saying I can't use a relay module?  I thought they were just two relays on a board? I just don't know the pin out of the old one.