Tail light, turn signal and brake light wiring diagrams?

Tiny
YFZ450RACER
  • MEMBER
  • 2003 FORD RANGER
Fx4 level II, tail lights don't work but flashers, brake lights adn dash lights do. What is my problem?
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Friday, October 19th, 2007 AT 5:14 PM

36 Replies

Tiny
2CEXPT
  • MEMBER
Do you have headlights if so the headlight switch is defective-it has an open in park position. No headlights check fuse no.33 15amp at battery junction box at left rear side of engine compartment. Here are the running light wiring diagrams so you can see how the system works and a guide. to help you check the connections.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please run this test and get back to us.
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Tuesday, January 15th, 2019 AT 11:11 AM
Tiny
YFZ450RACER
  • MEMBER
Yes I have headlights, high beam and low beam, just no tail lights.
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Tuesday, January 15th, 2019 AT 11:11 AM
Tiny
2CEXPT
  • MEMBER
What about brake lights? If so you have an open wire between the switch and lights.
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Tuesday, January 15th, 2019 AT 11:11 AM
Tiny
JSMITH1963
  • MEMBER
  • 2002 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 77,000 MILES
My truck has no brake lights, turn signals or hazards. I have running lights, headlights, dimmer, wiper control, etc. I have changed the turn signal flasher and brake light switch. What else could it be?
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
JDL
  • EXPERT
Welcome to the forum, it sounds like the multifunction switch. Does the high-mount brake lite work? Have you checked the applicable fuses? Here is the brake light wiring diagrams so you can see how the system works and a guide to help check for power.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
JSMITH1963
  • MEMBER
The high brake light does not work either. The high beams and wipers work that are associated with the multi-function switch. All fuses are okay.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
JDL
  • EXPERT
As far as the brake lights, the high mount brake lite is wired differently than the lower brake lights. if the high mount bulb and wiring circuit are good, I'd check the voltage to and from the brake switch. Lite green wire with red tracer is voltage to the brake switch, solid lite green wire goes hot when the brake switch is activated, carries voltage to brake lights, high and low.

See the guides below on testing wiring, they will help

https://www.2carpros.com/articles/turn-signals-not-working-blinker

https://www.2carpros.com/articles/how-to-check-wiring

Wiring diagrams are attached below
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
JBH1
  • MEMBER
  • 2000 FORD RANGER
  • 3.2L
  • V6
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Checked fuses and bulbs. New multi-function switch replaced. Still nothing. What else can we do? Please and thank you.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

You are loosing power somewhere I would start by checking the power at the fuses here is a guide to help you and the blinker wiring diagrams below so you can see how the system works.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
FRANKJAMES
  • MEMBER
  • 1998 FORD RANGER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I recently replaced the wiper motor plug and multi-function switch. Before, the problem was wipers inoperable. Now the wipers work along with everything else, but the turn signals do not work.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

It sounds like a fuse (#10, 21,13,11) is out, but to be sure lets use this guide and the wiring diagrams so you can see how the system works and the fuse locations as well.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
FRANKJAMES
  • MEMBER
Hello Ken! Thank you for your prompt reply and the helpful schematic images. I checked all of the fuzes and they were good. I dug back into my installation of the new multifunction switch and found that one of the plugs in the module plug cluster was improperly seated. Once I reseated the plugs the turn signals worked fine. Thanks for your assistance.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
KEN
  • ADMIN
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
GABRIELA PERALTA
  • MEMBER
  • 1998 FORD RANGER
  • 3.0L
  • 6 CYL
  • 2WD
  • MANUAL
  • 100,000 MILES
We changed the brake pedal and then lights don't work?
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

I would start by checking fuse # 10, 21 and 13 here is a guide to help and the brake and tail light wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please run some tests and get back to us.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

Are you referring to the brake pedal and not base? I need that confirmed. As far as the brake pedal, the brake light switch is there and you need to make sure it is properly installed and adjusted. Also, fuse 13 in the fuse panel under the dash supplies power. Check that, check the switch operation, and adjustment. Check out the diagrams (Below). Please let us know what happens.

Now, if you take a look at the schematic I attached, you will see there is a splice after the switch. There is a light green wire that goes to the brake lights and a dark green one that supplies power the third high mounted brake light. So, if that one is working, then we know the fuse is good. See pic 2 for how power is distributed to the brake lights.

As far as the brake pedal switch, here are the directions for replacing the switch. I'm adding that process because it shows and explains how the switch is actuated.

REMOVAL

1. Disconnect the battery ground cable.

2. Disconnect the Brake Pedal Position (BPP) switch connector.

3. Remove the BPP switch.
1 Remove the self locking pin.
2 Remove the spacer.
3 Remove the BPP switch.

INSTALLATION
1. To install, reverse the removal procedures.

NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.

Here are a few links you may find helpful when testing:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please let us know what happens.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
GABRIELA PERALTA
  • MEMBER
Hi,

Thanks for your reply; the brake pedal switch was changed again, all fixed.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
DEMATH65
  • MEMBER
  • 1998 FORD RANGER
As my husband was driving down the highway his dash lights and tail lights go out. We have replaced the fuses, as we thought might be the problem. But as he drives the truck again the fuses blow out again. So we replace the fuses again. It is obvious that there is an electrical problem but what?
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
M_H_RITZEL
  • EXPERT
Start with your husband checking the tail lights to see if there are any broken or shorted wires. Remove the tail light bulbs and check the bulb sockets. sometimes the wires get corroded and can short out, The tail lights and the dash lights are on the same fuse.

Check out the guide below on using a volt meter

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Wiring diagram is attached below
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)
Tiny
ROADBUM
  • MEMBER
  • 1997 FORD RANGER
Where exactly is the turn signal flasher located? I've heard it's under the steering column, I've looked, but don't see it. I'm talking about the little two prong round device.

I looked on the fuse panel on the left side of the I/P no flasher unit there (we are talking about one of those two prong round things they keep trying to sell me at the auto parts store arn't we?)

I've pulled the fuse panel out a little bit, there is a plastic cover that connects to the fuse panel itself, can't see any flasher behind that. I've even taken the shrouds off under the wheel and looked up behind everything, no luck there either.
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Wednesday, June 2nd, 2021 AT 1:51 PM (Merged)

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