2003 glow plug harness - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 02-23-2015, 06:31 PM Thread Starter
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2003 glow plug harness

i need to swap out a glow plug and I have read to not even try without having a new harness on hand, my question is that I have an 03, almost every harness I look up is 04+, are the 03's different then? Is one style better than the other? Thanks in advance!
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post #2 of 5 (permalink) Old 02-23-2015, 06:49 PM
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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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post #3 of 5 (permalink) Old 02-24-2015, 01:07 AM Thread Starter
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Re: 2003 glow plug harness

Sweet I was hunting for part numbers! Thanks!!
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post #4 of 5 (permalink) Old 02-24-2015, 01:41 AM
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Re: 2003 glow plug harness

You're welcome. I changed my glow plugs last winter (probably unnecessarily) and (of course) had to replace the glow plug buses too.

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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post #5 of 5 (permalink) Old 02-24-2015, 05:14 AM Thread Starter
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Re: 2003 glow plug harness

Yeah I'm tripping one for cylinder 2, starts just fine (in this brutal sub zero cold)but I have to pass emissions, and with it throwing a DTC I won't be able to have it tested.
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