2002 SD Trailer brake problems

Reply Subscribe

Thread Tools

Search this Thread

Apr 3, 2018 | 08:58 AM

Joseph Hamende

Thread Starter

New User

Joined: Apr 2018

Posts: 4

Likes: 0

2002 SD Trailer brake problems

Hey first time posting; have read the forum several times for advice. I bought a Tekonsha P3 and the factory pigtail to plug in to my factory trailer brake wiring harness under the dash. After plugging it in I have no power. I ohmed out the pigtail and all the wiring is good. I check the factory harness and do not have 12v there. I checked the fuse #6 30A it was good. What else could be causing this? When I hook up any trailer to my 7 way or 4 way the lights on the trailer work. Any help is greatly appreciated.

Truck is a 2002 F250 7.3 Lariat 4x4 Short bed

Apr 3, 2018 | 09:42 AM

jetty

Tuned

Joined: Dec 2017

Posts: 294

Likes: 29

From: Houston

Fuse #6 (should be 20 amp Mini), it powers the trailer turn/stop signals. Fuse #101 is a Maxi fuse, should be a 30 amp and provides power to brake controller.
Manual, page 162: http://www.ford-f250.com/manuals/200...s%20Manual.pdf .
Hope this gets you going!

Apr 3, 2018 | 10:46 AM

Joseph Hamende

Thread Starter

New User

Joined: Apr 2018

Posts: 4

Likes: 0

Thanks. I’ll check that one tonight.

Apr 3, 2018 | 11:32 AM

Joseph Hamende

Thread Starter

New User

Joined: Apr 2018

Posts: 4

Likes: 0

To clarify you are referring to the fuse panel under the steering column? I’ve seen on other threads people referring to another fuse block. I didn’t know of any other fuse locations. Thanks

Apr 3, 2018 | 12:16 PM

jetty

Tuned

Joined: Dec 2017

Posts: 294

Likes: 29

From: Houston

Quote:

Originally Posted by Joseph Hamende

To clarify you are referring to the fuse panel under the steering column? I’ve seen on other threads people referring to another fuse block. I didn’t know of any other fuse locations. Thanks

Yes, referring to the fuse panel under driver wheel in cab, page 161 of manual.

Apr 3, 2018 | 12:34 PM

Sparky83

FTE Legend

Joined: Jan 2009

Posts: 80,542

Likes: 97

From: Norlina NC

Quote:

Originally Posted by Joseph Hamende

To clarify you are referring to the fuse panel under the steering column? I’ve seen on other threads people referring to another fuse block. I didn’t know of any other fuse locations. Thanks

the other fuse panel they refer to in other threads is under the hood against the driver side fender.. but it only contains a few fuses and relays needed for the engine management systems. your issue is going to be the one under the dash...