Electronic Alarms and Home Security Devices - Hardwired panel and keypads exchange

I bought new DSC system 1832 with 2 keypads PK5501 to replace old Radio Shack system . I figured I could just connect
my wired window and door detectors to the new system. Doing fine until I get to the keypads. My old 4 wire connections are labeled [ + , Data 1 , Data 2 , - ] and
the new connections are labeled Red , Black , yellow, and Green.

I am guessing the red and black are the same as + and - but how do I tell where to put the Data 1 and Data 2 wires ?

Am I facing other problems like this in the switchover ?
jay8ch

Pick the color sequence you want to use, and simply be consistant. There is no magic in the wire colors, as long as your connections are the same at both ends of the wire.

Nearly all 4 conductor wire has red and black, but the secondary pair can be any of a dozen color combos. Yellow and green just happen to be one of the most common. Your wire could easily have blue and white for the second pair.