Question about 2005 Ford F-150 SuperCab

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Blew 20 amp fuse for tail lights and dash under hood while towing trailer replaced but still not working and head lights stay on

My 2001 f150 blew a 20 amp fuse under hood number 5 for tail and dash lights replaced but still don't work also head lights stay on can't turn them off haft to disconnect battery then they stay off can some one tell me how to fix

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  • Ford Master
  • 3,679 Answers

Sounds likely to be a relay blown so is giving constant supply to headlights and affecting rest of lighting system not sure of location on this vehicle but a google search will tell you if you dont have workshop manual

Posted on Mar 25, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

fuzzyyyy
  • 5 Answers

SOURCE: blew a fuse for my

on my 1997 explorer the power window and door lock fuse is under the hood. fuse box driver side, passenger side of fuse box, 5th or 6th from front of vehicle. I now use fuses with LED in them so when they go out they light up bright red. easy to see even in full sunlight. cost about 3 dollars more but worth it. 30 Amp fuse.

Posted on May 07, 2009

sscullys
  • 984 Answers

SOURCE: 2001 F150 supercrew w/ factory towing - No tail lights on trailer

Not sure which fuse you checked.
The Engine Compartment Fuse Panel ( Battery Junction Box / BJB ) is where the fuse is for the trailer tow adapter parking lamps.
Fuse # 5 is the fuse for the parking lamps, and the reversing lamps.

Next is the trailer tow adapter park lamp relay. This is what BJB Fuse #5 feeds, and the coil is operated by the truck's parking lamps. This is also in the BJB, Relay 201, it is the 1/2 size relay.

Not sure what you took a resistance reading from on the trailer tow adapter.

If you want, you can pull the trailer tow park lamp relay, and jumper the normally open contacts, which should provide power at the trailer tow adapters, regardless of the truck's lights.
4418e16.jpg

This is the wiring diagram for the trailer tow park lamps
c2f0bcb.jpg

Posted on Mar 09, 2010

reisdos
  • 1297 Answers

SOURCE: where to start looking for a short in a 1992 ford

connector under the truck, near the trans
cannot remember specifics at this time but remember starting there every time one cam into the dealer with tail light issues and blown fuses

Posted on Jun 17, 2010

sscullys
  • 984 Answers

SOURCE: i blew #5 and #6 fuse under my hood. now my

BJB ( aka Battery Junction Box , engine compartment fuse panel ) fuse #5 is for the trailer tow reversing lamp relay & the trailer tow running lamp relay. This is to the normally open contacts on those relays, which is the circuit to the 7 pin trailer tow adapter.
- Have you checked your 7 pin trailer tow adapter for metal left in there from a trailer plug ?
If you pull those 2 relays and replace fuse #5, does the fuse blow ? If so under what conditions ( i.e. when the headlamps are turned on, or when the truck is placed in reverse ) ?

BJB Fuse # 6 feeds the park lamp relay & the headlamp relay for the autolamp function. This could be where the lights staying on it coming from, but I would have guessed just the autolamp would have stopped working.
When the parking lamps are staying on, is this with the main headlamp switch in the auto position, or with the switch turned off.

The blinking OD light is the transmission reporting an error ( trans sensor issue or the actuator circuits have failed ).

The 1st place to check for this ( which is somewhat connected to the BJB Fuse #5 ) is the DTR ( Digital Transmission Range ) Sensor on the side of the transmission.

Could be the DTR connector is gummed up with road dirt, causing an issue. Part of the DTR is for starting ( Neutral or Park acts as a switch ) and part is the reverse ( again acting like a normal switch ) the other parts of the DTR feed information to the PCM for shift control and for 44 ( if the truck is a 4x4 ) for shift operation.

Start with the DTR on the side of the trans, unplug the connector and clean it with contact cleaner, and the check on the relays above.

Please report back your findings as a comment on this problem.

Thanks

Posted on Oct 28, 2010

  • 1114 Answers

SOURCE: Lost only my parking lights, have trailer park

Hello you have blown those bulbs out you will need to replace them some times this happens these are usually sold in packages of two.This is my solution to you.

Posted on Jan 02, 2011

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1 Answer

I have a 2005 Pacifica. My dashboard lights went out and then I noticed my tail lights werent lit either. I changed the 20 amp fuse for my dashboard and it blew 2x. What could be wrong with my baby?


Quite often it is in your trailer plug, but you have a damaged wire somewhere, First check your trailer plug, replace fuse if it blows now then unplug the plug under the dash on the drivers side pillar that runs under the carpet, replace fuse if it blows now you will need a professional, if it works you know where to chase it

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What about the fuse box inside the truck? You did blow a fuse that I am sure of.

Jun 06, 2012 | 2002 Toyota Tundra

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I blew #5 and #6 fuse under my hood. now my running lights stay on plus my overdrive light blinks and my transmission runs bad.


BJB ( aka Battery Junction Box , engine compartment fuse panel ) fuse #5 is for the trailer tow reversing lamp relay & the trailer tow running lamp relay. This is to the normally open contacts on those relays, which is the circuit to the 7 pin trailer tow adapter.
- Have you checked your 7 pin trailer tow adapter for metal left in there from a trailer plug ?
If you pull those 2 relays and replace fuse #5, does the fuse blow ? If so under what conditions ( i.e. when the headlamps are turned on, or when the truck is placed in reverse ) ?

BJB Fuse # 6 feeds the park lamp relay & the headlamp relay for the autolamp function. This could be where the lights staying on it coming from, but I would have guessed just the autolamp would have stopped working.
When the parking lamps are staying on, is this with the main headlamp switch in the auto position, or with the switch turned off.

The blinking OD light is the transmission reporting an error ( trans sensor issue or the actuator circuits have failed ).

The 1st place to check for this ( which is somewhat connected to the BJB Fuse #5 ) is the DTR ( Digital Transmission Range ) Sensor on the side of the transmission.

Could be the DTR connector is gummed up with road dirt, causing an issue. Part of the DTR is for starting ( Neutral or Park acts as a switch ) and part is the reverse ( again acting like a normal switch ) the other parts of the DTR feed information to the PCM for shift control and for 44 ( if the truck is a 4x4 ) for shift operation.

Start with the DTR on the side of the trans, unplug the connector and clean it with contact cleaner, and the check on the relays above.

Please report back your findings as a comment on this problem.

Thanks

Oct 27, 2010 | 2001 Ford F150 Styleside SuperCrew

1 Answer

2001 F150 supercrew w/ factory towing - No tail lights on trailer


Not sure which fuse you checked.
The Engine Compartment Fuse Panel ( Battery Junction Box / BJB ) is where the fuse is for the trailer tow adapter parking lamps.
Fuse # 5 is the fuse for the parking lamps, and the reversing lamps.

Next is the trailer tow adapter park lamp relay. This is what BJB Fuse #5 feeds, and the coil is operated by the truck's parking lamps. This is also in the BJB, Relay 201, it is the 1/2 size relay.

Not sure what you took a resistance reading from on the trailer tow adapter.

If you want, you can pull the trailer tow park lamp relay, and jumper the normally open contacts, which should provide power at the trailer tow adapters, regardless of the truck's lights.
4418e16.jpg

This is the wiring diagram for the trailer tow park lamps
c2f0bcb.jpg

Mar 09, 2010 | 2001 Ford F150 Styleside SuperCrew

4 Answers

F150 Ford 1998 is there a fuse for a trailer and where is it located? Thank you


There are a few fuses for the trailer tow adapter.

1st, is theodd location on the 97-98, engine mini fuse panel has a 20 A fuse forthe stop / turn lamps. Have seen it covered in tape from the factory onsome 97-98 MY trucks.
This is on page 142 in the owners 1997 manual, all the revisions for the 1998 owners manual I have seen do not include this fuse box for some reason.

Download a PDF version from Ford, for the 1997 MY at :

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

This is a picture of the Power Distribution Box, additional relay box and engine mini fuse panel with the covers off. The 20A in the upper right panel with the red base, is the trailer stop/turn fuse.
3b8aa6c.jpg

The others :
1. Power Distribution Panel / engine compartment fuse panel
Fuse #1 - Trailer tow back-up and tail lamps
Fuse #16 - Trailer tow battery charge and stop/turn lamps
Fuse #28 - Trailer tow electronic brake

2. Instrument Panel Fuses ( cab fuse panel by hood release )
#23 - trailer tow battery charge relay

Nov 11, 2009 | 1998 Ford F150 Regular Cab

2 Answers

I HAVE NO VOLTAGE AT THE TRAILER CONNECTION


There are a few fuses for the trailer tow adapter.

1st, is the odd location on the 97-98, engine mini fuse panel has a 20 A fuse for the stop / turn lamps. Have seen it covered in tape from the factory on some 97 MY trucks.
This is on page 142 in the owners manual.
If you see one, you can download a PDF version from Ford at :

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

The others :
1. Power Distribution Panel / engine compartment fuse panel
Fuse #1 - Trailer tow back-up and tail lamps
Fuse #16 - Trailer tow battery charge and stop/turn lamps
Fuse #28 - Trailer tow electronic brake

2. Instrument Panel Fuses ( cab fuse panel by hood release )
#23 - trailer tow battery charge relay


Nov 01, 2009 | 1997 Ford F150 Regular Cab

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