dont touch the ecu wires unless you know what your doing or have some who does doing it for you. you can cause alot of damage and problems, best advice i can contribute to that. if your looking for a 12v source to light the gauges the best way i think you'd be to "t" of the headlight switch to an open slot in the fuse panel with its own seperate fuse, and comes on like it came from the factory. i thought i seen a diy for the fans i'll check.