as above, get yourself a test light (a screwdriver with a wire coming out of one end) with no ignition on put the wire end (usually has a crocodile clip) onto the earth wire then touch the other end on wires (this will do no harm) when you get the permanent live the bulb in the screwdriver will light up. now repeat this process with the ignition on & another wire will light up the screwdriver, turn off the ignition off & this should put the light out again, this wire is your remote live,swap this around with the permanent live & this will give you memory when the car is turned off.
john, June 2008