95 chevy pickup door lock

working on a 95 chevy ck ext cab i don't think it has keyless how would i tell and if it doesnt then how do i hook up locks to alarm.  I think it is a 5 wire reverse but all i see on here is 5 wire alternating is that the same

like this

or this

thank you for your help what is the other for

also how wold i tell if it has keyless or not

no but it is a used truck and maybee does not exist anymore