So I just got myself a 1989 Nissan 200sx (that's what we call them here in Europe). With a 1.8l turbo engine, close to 200bhp and one hell of an attitude.

The car has an aftermarket DEFA security system that activates by remote. I guess the installer was too lazy to connect the central locking to the remote as well.

So my question is, how the hell do I make sense of all the wires beneath the steering wheel? I'd guess the wiring should be near identical to the wiring in the 240sx. If I could find out which wires control the door locks I could figure out the rest with the circuit diagram in the DEFA manual.

 

Ah forget it, turns out my security system is so cheap it doesn't understand central locking doors. Gotta look for a new system, I guess.