aftermarket 5 wire door locks

Hey NowYaKnow,

I have the same 148 kit. It is just SPAL's 2-door central locking kit. Your description fits the wiring for SPAL's M5 module perfectly! I'm getting ready to integrate this into my Viper alarm now that I've got it somewhat sorted out. I have found that the purple wires, when grounded, cause the actuators to lock.  Ground the brown wires and they unlock. So, seems straight-forward to connect the green wire from the lock harness to the purple and the blue to the brown. However, my question is do I need to diode isolate the wires from the lock harness? If so, which way would they face?

Thanks!