Location of Underhood Fuses?
#1
#2
You can find the information in your owner's manual. If you don't have one, you can download a copy here.
https://www.fleet.ford.com/maintenan...ls/default.asp
https://www.fleet.ford.com/maintenan...ls/default.asp
#3
#4
specific LOCATION of underhood fuses??
Trying to locate fuses to trailer plug (left turn blinker and left brake light on trailer not working) Truck is 2003 F250 SuperCab with 6.0 Diesel. Truck turn signal and brake light work fine. I have read manual and it does NOT to the best of my knowledge show or tell where the underhood fuses are located. I have two small black plastic boxes underhood, drivers side, one has two fuses and four relays?, the other has two relays? Both fuses were good. Any suggestions? thanks all for views and advice so far.
#5
Get a test light check your truck trailer plug.
How To Use a Test Light - Using a Circuit Tester to Troubleshoot Electrical - Ground Check Circuit Test
It sounds like you have a wire problem on the trailer.
How To Use a Test Light - Using a Circuit Tester to Troubleshoot Electrical - Ground Check Circuit Test
It sounds like you have a wire problem on the trailer.
#6
#7
Your owners manual is at...
http://www.motorcraftservice.com/pub.../03f23og5e.pdf
Refer to page 178. The Trailer Tow Stop/Turn Lamp fuse is fuse #6 in the Central Junction Box under the access panel below the steering wheel. It's not under the hood. From what you describe, and based on the fact that the Owner's Manual doesn't describe the under hood fuse box, I'd say that your 2003 is like my 2004 and there is no under hood fuse box. I believe the two fuses and 4 relays have to do with the diesel engine controls, but I'm not sure, they're not described anywhere that I've found. The two relays alone are the 4x4 shift control relays.
http://www.motorcraftservice.com/pub.../03f23og5e.pdf
Refer to page 178. The Trailer Tow Stop/Turn Lamp fuse is fuse #6 in the Central Junction Box under the access panel below the steering wheel. It's not under the hood. From what you describe, and based on the fact that the Owner's Manual doesn't describe the under hood fuse box, I'd say that your 2003 is like my 2004 and there is no under hood fuse box. I believe the two fuses and 4 relays have to do with the diesel engine controls, but I'm not sure, they're not described anywhere that I've found. The two relays alone are the 4x4 shift control relays.
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#8
I've attached a diagram below. Thing is, if only your left turn/stop light aren't working, then I'm assuming your right turn/stop light are. Which means it can't be the fuse, because the fuse is for both left and right.
This means it has to be the relay, or a broken wire. The diagram below shows the turn/stop relays. But be aware, that this is from a 2004 service manual. I can't guarantee that a 2003 is the same.
This means it has to be the relay, or a broken wire. The diagram below shows the turn/stop relays. But be aware, that this is from a 2004 service manual. I can't guarantee that a 2003 is the same.
#9
Trying to locate fuses to trailer plug (left turn blinker and left brake light on trailer not working) Truck is 2003 F250 SuperCab with 6.0 Diesel. Truck turn signal and brake light work fine. I have read manual and it does NOT to the best of my knowledge show or tell where the underhood fuses are located. I have two small black plastic boxes underhood, drivers side, one has two fuses and four relays?, the other has two relays? Both fuses were good. Any suggestions? thanks all for views and advice so far.
https://www.fleet.ford.com/truckbbas...bb_pdf/203.pdf
#10
#11
#12
no trailer turn or brake lights
This is an old thread and I have the same problem as was originally posted. Brake and turn lights work fine on truck but not coming back to the trailer plug. I replaced fuse #6 even though it looked good and still nothing. My emergency flasher quit years ago and I haven't been able to find it but all the lights and turns worked great until a couple of weeks ago. I would like to know for sure if there is or is not another fuse box under the hood. I can't find it if there is. I really need this fixed as I only use this truck for towing the trail bronco around and I have places to go. Thanks for any help.
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WishIhada7.3
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11-08-2009 10:32 PM