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Wiring diagram for 2003 F350 7.3

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Old 09-02-2011, 11:09 PM
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Wiring diagram for 2003 F350 7.3

Looking for a complete wiring diagram for my truck. Ignition switch and everything. Thanks
 
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Old 09-03-2011, 06:20 AM
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That's not a diagram, it's a book you're asking for. If you need something specific, we might be able to help you out. If you want the complete wiring schematics, I'd suggest https://www.ford-trucks.com/forums/1...s-members.html
 
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Old 09-03-2011, 08:30 AM
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Try this

EBSCOhost - world

user- marshall

P word- public
 
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Old 09-03-2011, 10:24 PM
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thats helped a lot thanks man
 
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Old 09-03-2011, 10:43 PM
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Here is a version I keep on my site. It is for an '02 but should be identical for yours. I have bookmarked it into sections to make use easier.

2002 Wiring Manual- (EDIT) this links to my electrical page now
 

Last edited by woodnthings; 11-16-2020 at 11:54 AM. Reason: Link Edit
  #6  
Old 09-04-2011, 08:10 AM
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Ken's site is the shizzle. I keep it bookmarked in my favorites
Barney
 
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Old 09-04-2011, 09:25 AM
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careful with the 02 and 03 being the same comment....i think there are some differences such are wire color codes and some options....double check everything you come across before you tap into your pcm wire to steal power for some extra lights!
 
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Old 09-04-2011, 09:50 AM
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WOW, thanks guys. I was going to buy the wiring manual for my truck, but you just saved me $70.
 
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Old 07-12-2019, 06:13 PM
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Originally Posted by F350-6
That's not a diagram, it's a book you're asking for. If you need something specific, we might be able to help you out. If you want the complete wiring schematics, I'd suggest https://www.ford-trucks.com/forums/1...s-members.html

Actually I'm just interested in what wiring and circuitry is fed from that fuse and why the owner's manual does not correctly identify what the fuse actually controls.
 
  #10  
Old 07-13-2019, 01:23 AM
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Originally Posted by daveboley
Actually I'm just interested in what wiring and circuitry is fed from that fuse and why the owner's manual does not correctly identify what the fuse actually controls.
Welcome to FTE!

I'd suggest starting a new thread with your particular situation so we can focus on it. Necroposting on this thread obscures your needs.
 
  #11  
Old 11-07-2020, 05:40 PM
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I also have some questions about wiring on my 2003 f350, but none of these 9 year old links work anymore... So, I'm late to the party again. Aft of the battery on the passenger side is a solenoid, appears to be a starter assist relay. on the battery side of this relay, are 2 pair of gray wires, about 14-12ga, always hot. One pair constantly draws .68 amp from my battery, all the time, except occasionally it jumps to over 1 amp, and something whirrs for a second or two. With this disconnected, I have no power to the key switch. I'm considering adding another relay for this circuit, so it is only hot when I turn it on. Is this a normal Ford trick???

 
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