right, ive had a cable for ages and have used the software before on 2 laptops. but ive now got my cable back , and it wont find the interface..it finds the port ok 'com 3' but no interface, ignition is on as is light on the dongle. so im thinking power supply to the cars rs232 port. is there a fuse for this??? help, as i want to put my abs light out. jim