Well, what a detective story this turned into :lol: A fortnight later, and I finally have it all working properly. The central locking, was very simple, wire colours were spot on, cheers guys Getting it to double lock properly, was another matter entirely and a bit of a shitter at times to be honest lol. Anyway, it turns out that the two thick white/red 'unlock' wires on the smaller multiplug - one is central locking unlock, the second (pin 9) is actually double locking unlock. However confusingly, activating that pin will trigger a central locking unlock as well! As for locking the double locking, took me ages and some external help to figure out how the hell that was done. Eventually found out that the double locking set (Ford call it 'Double locking Reset' just to confuse matters) wire is a thin yellow/red wire at pin 1 of the large wider multiplug. Simple you might think, have two lock signals, one to central locking wire, one to double locking. Fcuk no, why would it be that simple :lol:? It turns out there are actually two double-locking trigger wires (as I discovered much later), and that these must be triggered independently, can't be triggered at the same instant (they must be done in a 1.....2 type action), and before it will double-lock, the double-locking unlock signal must have been sent previously! The two double-locking wires are both yellow/red and are together, starting at pin 1 on the large multiplug. Just to compound matters there are other, completely unrelated yellow/red wires on the same plug! Test before connecting! :lol: The first of these yellow/red wires seems to double lock the drivers door, rear passenger door, and boot. The second does the front passenger door, rear drivers door, and Fcuk knows what else :lol: I tried a multitude of ways to get it to double lock and couldn't figure out why it wasn't working properly. I initially had both wires bridged into a single cable and a relay sending +12v at the same time the central locking was triggered. This produced intermittent results where certain doors would sometimes double lock, sometimes not, or sometimes no double locking at all no rhyme or reason to it. I next tried with two diodes on the double locking wires to isolate them, but still the same single relay wire sending the lock cable to both at the same time. Again, intermittent results, usually it would result in 1-2 doors randomly double locking but again it was completely random. Finally, after loads of dicking about, the way I discovered which works properly was sending the lock signal to the drivers/rear passenger door wire first, then the other one slightly afterwards. I accomplished this by triggering the first DL signal directly from the locking interface, while at the same time using that DL signal to trigger a relay, whose output a split second later went separately to the second DL wire (passenger and rear drivers door). This very small delay between the two wires seems to be just enough to trigger a successful double lock of all doors and boot. Before I even got to this stage I of course had to build the old Mondeo style interface to emulate the unlock-pause-lock key action which is supposed to trigger double locking (no such luck :lol: ). This sounds very convoluted but it's actually quite simple when you get to the bottom of it, I have some diagrams I designed on paper, will try and post them here in case it's useful to anyone else. One thing I did find is that even though double locking is being triggered as if with the key, the car doesn't do the double indicator flash when triggered by remote, not entirely sure why but it was the least of my worries at that point :lol: To get round this I used another relay, triggered by the remote locking output and wired to the hazard switch, to trigger an indicator flash. I also wired it to the alarm horn (thick green/orange wire on smaller multiplug) to provide a momentary blip on locking. Will try and do some diagrams so the above makes sense, it's actually not that complicated of you come to it pre-armed :lol: Cheers for the help guys
