extra wires under dash
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extra wires under dash
I found the 4 spare wires that run through the firewall and used one. They are solid coor wires that are bare at both ends. On the dash side I also found 4 smaller wires that had a sealed end. These wires are smaller in diameter, and are multi colored (eg: green/yellow stripe). Does anyone know where these striped and capped wires go?
Elder User
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From: northern,california
What truck do you have? Do you have upfitter switches? Sounds like the ones that go through the fire wall are the extra wires Ford puts in so you don't need to fish wires through the fire wall. If you have the upfitters the multi color ones would be for them. They should be marked. Look in the Tech folder it explains a lot.
Elder User
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The four 'blunt cut' pass-through wires are the same color on both sides of the firewall. Red, Black, Blue and White. They are roughly central, between the knees, bent over and wrapped in a larger harness just up under the lower dash. Use a bright light, on your back and you can't miss 'em.
Take Care
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Junior User
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From: liberty lake,WA USA
Originally Posted by CarterCrew
I found the 4 spare wires that run through the firewall and used one. They are solid coor wires that are bare at both ends. On the dash side I also found 4 smaller wires that had a sealed end. These wires are smaller in diameter, and are multi colored (eg: green/yellow stripe). Does anyone know where these striped and capped wires go?
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I can't remember what the colors were but I had 3-4 that were used for options like PTO and such. I used one and hooked to up for the High Idle Mod. I remember they were very close to the pass through wires. Maybe these are what you are seeing if you dont have 'upfitter' switches. Look in the tech folder for something called "High Idle Mod", I remember it talked about the wires under the dash and what they do.
Just letting you know what they could be...not sure though...thats what they were in my truck. Its a '04 250 6.0 lariet 4X4
Just letting you know what they could be...not sure though...thats what they were in my truck. Its a '04 250 6.0 lariet 4X4
Last edited by IB Tim; Mar 11, 2007 at 06:53 AM.
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Thanks for the replies. I am guessing that the wires I am asking about are for the up-fitter switches. My truck doesn't have the switches installed. Btw, it is an 04 F-250 Crew Cab. Since I don't have the switches, where would I find the other end of the wires in question? I am guessing somewhere behind the glove-box?
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Originally Posted by Btravelen
The four 'blunt cut' pass-through wires are the same color on both sides of the firewall. Red, Black, Blue and White. They are roughly central, between the knees, bent over and wrapped in a larger harness just up under the lower dash. Use a bright light, on your back and you can't miss 'em.
Take Care
Take Care
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Originally Posted by Btravelen
Are you looking for 1 of the four pass-through wires? One of the colors above?
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From: Republic of Texas
You won't find the "other ends" as they are wired to various truck setup's, like for PTO, which is then wired to the upfitter switch's if you want that option. You would have to read the body builders guide for all the things those wires are for. Look through the Tech file in this folder and Super Duty.
Cargo Master
Joined: Aug 2005
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From: Alberta, Canada
There is also a bundle of about 13 wires that go to the PCM etc. That is where you find the wire to do the high idle mod.
edit: nevermind, I should have read Lonewolf's post above...
edit: nevermind, I should have read Lonewolf's post above...
Last edited by Super08; Mar 12, 2007 at 12:03 PM.
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