Re: 2003 glow plug harness
Very different. The early ones use a busbar. The later ones are better, but I seem to remember reading somewhere that you cannot swap to the newer ones, you must stick with the original. I don't know if this is true or where I read it. Maybe someone else can confirm.
For direct replacements, the left side (driver) is 3C3Z-12A690-AA and the right side (passenger) is 3C3Z-12A690-BA.
2004 F-250 Lariat, 6.0, SCLB, 4wd, Magnaflow turbo-back, EGR delete, studded, 6.4 banjo, new oil cooler and HPOP as of 5-11-2014
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