Hi all,
Disregard the previous post asking for a pin out for the central locking control module. It's gone.
I was a bit sick of the short range of the factory remote, and I'd drowned one and was looking at the cost of replacements and decided to go down a different track.
An afternoon with a multimeter, a couple of beers and some head scratching, a visit to Jeff (East Coast Auto Electrical) for a second opinion and it's done. The central locking on the GU is now controlled by a Dynamco Cyclops P275. They're Australian made, really reliable, spare remotes are cheap & easy to get and the unit with two remotes cost half of what it was going to cost to replace one factory remote.
The unit I installed is one of these:
Dynamco Cyclops P275
I was going to use one of these
KE-CLR-TX90 Keyless entry system but Jeff had the other in stock and I might end up hooking up the immobiliser feature later.
There was a bit of mucking around involved. The GU keyless entry triggers aren't straightforward. Rather than just taking a negative pulse to trigger lock or unlock, they actually alternate the polarity across the actuators. Also triggering the indicators to provide visual confirmation requires an additional relay.
All the connections required can be found in the keyless entry model plug. Along with the kit you also need a standard relay and some diodes for the indicators, and two SPDT relays to drive the central locking.
The glove box comes out first - about 8 screws and it and it's surround just comes away then the module is in above the cavity between the glove box & the stereo. If in doubt push the unlock button & listen for the clicking.
I'll have to draw a few diagrams to explain wiring it up if anyone's interested.
I don't really have a use for the old remote & controller now, so maybe ebay might pay for the new one by selling the old one. Dunno if they fit into a DX to give it central locking?
Dave