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Locating The Factory Brake Controller Wire Harness On A 2003 Ford E-450 Motorhome  

Updated 06/19/2024 | Published 06/12/2024

Question:

Hi Can you tell me where the OEM plug for the 3035-P adapter is for a 2003 E-450 RV? I found a plug close to the fuse box on this Van, but the wiring doesn't look correct size, or color?? Thanks Norman

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Expert Reply:

Hello Norman,

Yes, I have added a photo for you showing the location of the brake controller adapter on a 2003 Ford E-450 RV so you can plug in the Tekonsha Plug-In Wiring Adapter # 3035-P.

It's right below the fuse assembly, behind the parking brake.

expert reply by:
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Kyle S
Brake Controller Port Locale
Brake Controller Port Locale
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Norman W. profile picture

Norman W.

6/19/2024

Hi Kyle I found a plug there, but the wires are not the correct colors I would think from experience. The 3 wires to match the wires in the 3035-P location are BLUE, Green and a Black with Blue stripe. It has all 6 pins with wires in it of course the 3035-P only uses the 3. Does this sound correct? Thanks Norman

Kyle S. profile picture

Kyle S.

6/19/2024

@NormanW I believe there's actually two connectors there, and the one you're looking for should have a blue wire, red wire, and green wire.

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