trailer brake controler
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Motorcraft WPT421
The photo from Rockauto is a bit misleading but it is supposed to have the 4 and 3 pin connectors on the end of the leads.
More Information for MOTORCRAFT WPT421
I am not sure if it is still available. The last time I checked in 2011/2012 it was $116 USD.
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New User
Joined: Mar 2006
Posts: 9
Likes: 0
Ford 3U2J14B475KCA, 3U2Z14S411KCA
Motorcraft WPT421
The photo from Rockauto is a bit misleading but it is supposed to have the 4 and 3 pin connectors on the end of the leads.
More Information for MOTORCRAFT WPT421
I am not sure if it is still available. The last time I checked in 2011/2012 it was $116 USD.
<table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="vertical-align: bottom;">
</td><td>
</td></tr></tbody></table>
Motorcraft WPT421
The photo from Rockauto is a bit misleading but it is supposed to have the 4 and 3 pin connectors on the end of the leads.
More Information for MOTORCRAFT WPT421
I am not sure if it is still available. The last time I checked in 2011/2012 it was $116 USD.
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</td><td>
</td></tr></tbody></table>
Thanks,
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
The trailer wiring is the same on 1992 to 1996 F150/Bronco and 1992 to 1997 F250/350. I found another part number for the harness: F6TB-13A576-BA
Another tidbit of information from Steve83: http://www.supermotors.net/registry/media/670235
Another tidbit of information from Steve83: http://www.supermotors.net/registry/media/670235
New User
Joined: Mar 2006
Posts: 9
Likes: 0
well, having some challenges finding that last part... The 7 pin socket with the 2 connectors on the pig tail that plug into the truck (gray & black 4 pin & 3 pin). I found on on this site: Motorcraft - WPT421 ~ Wire Asy Motorcraft - WPT421 Wire Asy Part #3U2Z14S411KCA. I had the guy pull it and check to see if it physically had to two pig tail 4 & 3 pin connectors and it did not, just bare wires?
Any other idea where I could get one with the two connectors?
Thanks
Edit: just talked to Ford directly and they said the part is discontinued...? Oh well, I wanted to do the plug & play but looks like I may be splicing.
Any other idea where I could get one with the two connectors?
Thanks
Edit: just talked to Ford directly and they said the part is discontinued...? Oh well, I wanted to do the plug & play but looks like I may be splicing.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Sorry to see I got your hopes up for nothing....rats 
Do an E-bay search on the F6TB-13A576-BA part number above. There are a few hits that are very close. F6TB vs. F6TB may only be a Bronco versus a F150. Same part.....be aware, they are pricey.
Do an E-bay search on the F6TB-13A576-BA part number above. There are a few hits that are very close. F6TB vs. F6TB may only be a Bronco versus a F150. Same part.....be aware, they are pricey.
Cargo Master
Joined: Oct 2010
Posts: 2,674
Likes: 16
From: Ideeho
I located the harness, but, looks like it had a controller at one time and the installer cut the plug off! There are scotch locks on the ends of the harness to where the old controller was wired. I've got the wires but are they ever short! If only people would take the time! It would have been easier for the guy to have used the pig tail instead of cutting everything! Now it's perseverance! I'll win!!
It really makes me mad when P/O's do that kind of thing. Do as others have suggested and go to a junkyard and get the plug with as much wire attached to it as you can. Then do a proper soldered and heat shrink splice.......no butt connectors.....it will never give you a bit of trouble and you can take credit for repairing it right.........especially if you ever sell the truck to me.......LOL
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New User
Joined: Mar 2006
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No worries, don't be sorry. I appreciate all of the help! THANKS
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