agspecialties

Have a 87 royal and am having some head light problems. The light will come on sometimes, and other times won't turn on. All i have done is check the light plug on the back of the head light. When it works, i have power, but when it doesn't work, i don't have any power. DUH. When the light works, i have high and low beams. Where do i start on this problem? Thanks Aaron