Christian, Per the diagram, the Purple wire coming off #17 fuse loops to the radio, so in other words the wire is in parallel not in series so if all the other things didn't work, the power on this wire will still operate the radio. This wire will be hot all the time unless there is a break from the source. The hot wire feeding power to #17 fuse is brown. Check the ground on the radio. The other LGW color wire going to the radio from the #11 fuse gets it power from the other side of the #11, a white blue wire coming from the accessory relay and the key must be turned on and the relay energized before power will appear on this wire. If it were hot all the time, the radio wouldn't shut off. John hervey http://www.specialtauto.com/modification.shtml