I bought and installed hellas on my '06 STi just before Christmas. I too bought a wiring harness and because of the short leads from the relay, mounted it in the same location that you did using double sided tape. Everything was great until it snowed and the roads were salted. FOR ALL OF THOSE WHO REGULARLY DRIVE WITH HELLAS IN SNOWY, ROAD SALTED AREAS, THIS SETUP WILL NOT FLY. It took less than 2 weeks for my relay to thoroughly corrode (connection prongs and internals) and the relay failed. I bought a new relay and a buddy of mine helped me take out the harness, cut it apart, and rewire a new one so that the relay is mounted in the engine bay behind the fuse box. Luckily the harness was not a complete waste of money because most of the wiring was salvageable. Hopefully the new relay will not corrode in that location. Just a heads up for all those installing hellas in snowy areas. Btw, your car looks great and enjoy the horns!