Compression Ignition Addict
Join Date: Oct 2013
Location: Torrance, California
Thanked 35 Times in 33 Posts
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The wires on my truck aren't for courtesy lighting. They are different colors than the courtesy light circuit, and are different colors on each side. Yellow on passenger side, tan on driver side. I would expect sensors to be different color wires side to side, courtesy lights, no. Courtesy light circuit is blu/blk, the other wire would be ground. (Ford ctsy lights are 'backwards' from pretty much every other manufacturer on earth. Ford switches the B+, everyone else switches the ground side).
My 99 Super Duty has factory running boards. But they don't have the lights I've seen on Expeditions and Excursions. I've never noticed that Super Dutys have the lights. I'll start looking for them. If they don't have the lights in 99, then why would they have connectors for them?
But the connectors on my Feb 99 Super Duty are not for lighting. No way. Not the right colors, and different colors on each side. Someday I'll put my signal tracer on them, and see where the other ends are.
I'd triple check what they are for before plugging lights into them. I'm pretty sure solid98 is not correct about their intended function.
Last edited by DaveP.; 07-02-2014 at 10:35 AM.