trailer lights not working

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Jul 20, 2009 | 05:18 PM

#16

dustys7.3psd

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I dont think that i have a fuse box under the hood.

Jul 20, 2009 | 05:22 PM

#17

duck fan

Because racetruck

Joined: Apr 2007

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From: Monterey Bay, CA

I promise you do. Its in the corner of the driver's side fender and the firewall. Between the fender and the master cylinder.

Jul 20, 2009 | 05:28 PM

#18

tdpower

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He has a 2003. They moved all the fusses to the cabin compartment in 2002 I believe. I would suspect a relay or fuse as well.

Jul 20, 2009 | 05:28 PM

#19

dustys7.3psd

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ok i have two little boxes which both have 3 relays in them but not numbers or anything that indicates what they may be for.

Jul 20, 2009 | 05:35 PM

#20

duck fan

Because racetruck

Joined: Apr 2007

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From: Monterey Bay, CA

Quote:

Originally Posted by tdpower

He has a 2003. They moved all the fusses to the cabin compartment in 2002 I believe. I would suspect a relay or fuse as well.

Went back and read that. I swear the last time I read that post it said 2000. I need a nap.

Jul 20, 2009 | 05:40 PM

#21

zx250

Of the next Riffraff East

Joined: Oct 2004

Posts: 8,679

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From: Concord NC

Are you checking voltage against the truck or ground on the plug? You need to pull the fuses and check the them with a meter. They may look ok, but still be bad.
Did you get the link where you can download you a owners manual?

Jul 20, 2009 | 05:44 PM

#22

dustys7.3psd

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Got it. It was a blown #6 fuse (Trailer tow turn/stop relay). Thanks for all the help guys and the owners manual online.

Jul 20, 2009 | 05:55 PM

#23

zx250

Of the next Riffraff East

Joined: Oct 2004

Posts: 8,679

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From: Concord NC

Chit, I guess I missed seeing that was a fuse. Glad you found it.

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Jul 21, 2009 | 07:49 AM

#24

RFD_Truckie

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Joined: Apr 2009

Posts: 295

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From: Johnstown PA

Quote:

Originally Posted by dustys7.3psd

ok i have two little boxes which both have 3 relays in them but not numbers or anything that indicates what they may be for.

Take the covers off, and turn on a turn signal. Listen for the clicking relay and thats the trailer brake/turn relay box. the two smaller ones are the ones your looking for. Check out https://www.ford-trucks.com/forums/8...g-a-relay.html Its a thread that I have started since I am having the same problem. In my situation, I dont have constant power going to these two relays.

Hope you just need to change relays...