I just did the install on my rondo the other day. However, I cut the stock connectors off the headlight harness, leaving enough wire attached that I could solder them back on. I'm not worried about warranty issues since the wires I cut were contained in the headlight assembly itself, not part of the vehicle's wiring harness. I installed the ballasts under the headlights themselves. No pics but if you take your headlight out, they sit in a fiber-reinforced plastic tray. There's just enough room under this tray to install the ballast. The ballasts i used had three mounting holes that were tapped for machine screws. I had some stainless SHCS from a motorcycle carb kit that fit perfectly. I installed two of the three screws downward through the plastic into the ballasts, and used the third hole to zip tie the wires to. Makes for a clean, nearly invisible install with plenty of cooling air around it. I am going to get some friction tape to wrap the wires though so that everything matches OEM exactly.