Help with wiring a brake controller

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Mar 27, 2008 | 12:30 PM

dvlishdan

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Joined: Jun 2006

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From: Mississippi

Help with wiring a brake controller

I am trying to install a trailer brake controller in my 2003 F-250. Can anyone tell me what color the wires are in the wiring harness on the Ford side. I have found a connecter close to where the Body Builders Guide indicates, but there is no identification on the harness. Any help will be appreciated.

Mar 27, 2008 | 01:12 PM

wlihntr

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Joined: Jan 2004

Posts: 4,758

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From: colorado

brown...illumination
dark blue....trailer electric brake feed
red....trailer brake control feed
white ...ground
lt green....stop lamp feed to brake control

Mar 27, 2008 | 01:31 PM

Jojiggler

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Joined: Jul 2007

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From: SE PA

Do you need to have the towing package on the SD's to have the prewire harness and fuse options?

Mar 27, 2008 | 02:35 PM

sofdchief

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Joined: Oct 2004

Posts: 307

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From: South Onondaga, NY

Not 100% sure on this, but yes, i believe you DO have to have the tow package to have the pre-wired connection under the dash.

Mar 27, 2008 | 02:55 PM

rbaker6336

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Joined: Feb 2007

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From: Blairsville,Ga

I think all ford trucks have the plug under the dash just not the relays and fuses

Mar 27, 2008 | 02:58 PM

Jojiggler

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Joined: Jul 2007

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From: SE PA

Pretty certain my 99 F150 did not. That required the option. But thought i heard somewhere all 250's and up did. I can see though the fuse box requiring the package.