Welding electrodes with a welding face for contact with a metal surface for electrical resistance welding are provided with concentric contoured rings formed into the face. The method comprehends undertaking a program or subroutine when the vehicle is first powered up which moves the shift operators into a predetermined position. , and preferably contains metal material. Bulb life management improves project image illumination to display information in a variety of projector types, including digital mirror devices and liquid crystal displays. The first and the second linear combination are different.