Here is a great DIY for a Lexus GX470, a customer from the Club Lexus forums sent us the following step by step on how to properly install an HID kit in the GX470’s H3 fog lights.
An alternate method, for installation of the 4300K Volt HID Kit, H3 fog lamps on the Lexus GX 470.
This installation will take some technical skills and a little patience. This is on the drivers side, looking upward. Remove the electrical connector to the fog light. The green wire on the factory harness is the hot wire. Push in on the tab hard (red arrow) and wiggle and pull downward. Remove the retaining bolt with a 10 mm wrench/ socket. Push the fog light housing forward to remove.