This document will guide you step by step how to remove the Ford Super duty 4×4 F250 dash bulb replacement, each step equipped with illustration, its very detail. First, these type of 1/4 twist bulbs are called “neo-wedge” bulbs and the company that made these particular bulbs for Ford is “JKL Components Corporation”. The typical neo-wedge replacement bulbs I’ve found have a few problems. First, they are about 1/2 as tall as the 4×4 bulb is and second, the contacts are located in the wrong spot. The replacement bulbs have contacts located in the area shown by the blue arrow in the picture below. The Ford bulbs have contacts shown in the area by the red arrow. I haven’t confirmed this but these bulbs might also work for the headlight knob illumination. 4×4 Switch Assembly. I was able to pop it out without pulling the dash apart. Note the 1/4 twist bulb location in this picture. Original Bulb. I just removed the green rubber cap and re-used it on the new bulb, Here’s the bottom side of the original bulb housing, after I installed a new bulb in place of the blown one. I just bent the bulb wires around so they would touch the contacts, and soldered them. Then reinstalled it into the 4×4 switch assembly and it works great.
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