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Tech Editor's DeskProjects, papers, writings, thoughts, musings of our technical editor Joe Padavano. To begin with, he will be making threads and can approve posts to it if he wishes. This can be changed in the future if it does not work out well.
Which bulb goes on the outside and which one on the inside? Got a car all tore apart and need to know where high beam and low beam headlights go. 68 Cutlass.
Low beams (3-prong) to outside, high beams (2-prong) to inside. Check grounds good too as I've known a lot of 68s to have ground trouble with resulting dim headlights.