Hope someone might be able to offer some advice.
I have a tomtom Ipaq cradle with wired GPS receiver that is powered from the cigarette lighter. The plug that goes into the lighter socket in the car has disintegrated. I have a separate HP car charger for the Ipaq (5V 2A) that I don't use and thought I could just chop the jack off the power lead for the cradle and attach it to the Ipaq lead. However, having chopped both jacks off and come to join them the Ipaq lead has 3 wires (red, yellow and white) and the cradle lead has just black and white. I thought I might just be able to measure the resistance of each wire to determine which part of the plug each is connected to but they all show reduced resistance. Is it possible to do what I am attempting and if so how!
Thanks
Jon