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Power feed back when using turn signals - 2003 Oldsmobile Alero

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I believe you have a ground issue. Check out your grounds at all 4 lights
Hope this fixes your problem

Posted on May 12, 2010

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Posted on Jan 02, 2017

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I have a 2002 ford expedition that has a problem with the turn signals. when you turn on the right signal it works properly, but when you turn on the left signal both signals on the back of the vehicle...


Get a wiring diagram from the Free portion of the Autozone site. It is a little work to separate the Help categories at the bottom of their Webpage.

I have heard of SOME 4-way flashers that are built into the turn stalks causing problems. The contact pins for the turn signals are shared as 4-way flasher pins. Try clicking the 4-way flashers off/on about 20 times and then use the left turn signal. It has been known to reseat the contact pins.

The wiring diagram I mentioned would show where the tailgate top light gets its power. One feed should go to the brake light switch for the brakes and another feed should be the flasher feed.

As I see it, you have 2 extra lights going on when you use the left turn signal. Those 2 lights are the tailgate light and right turn signal. The wiring diagram should show the places where the wires are close enough to cross. I am thinking the 4-way flasher is the only place where the top tailgate light gets flasher power; the rest of the time the tailgate light is a Brake light.

I do not want to spend your money on an unnecessary turnstalk and that is why I say to look at a wiring diagram and see if there is anyplace where the wires could cross.

Last, trailer hitch plug. All wires are bundled with left turn, right turn, and brake light in the trailer hitch plug. Corrosion could connect the terminals.

Would like to know what you found.

Oct 08, 2013 | 2002 Ford Expedition

1 Answer

I having problems with the turn signals


replace the bulb with the correct one, sounds like you have a single filament bulb where a double filament bulb goes and it is back feeding power through the parking light system when you turn on the signal.

Oct 26, 2012 | 1987 Ford F 150

1 Answer

Rear lights not working on 2002 suzuki grand vitara


In the underdash fuse/relay box, the 15A TAIL fuse feeds power to the coil of headlight relay 2. When the combination switch is set to TAIL, the relay closes and the outer tail lamps light. In the same underdash fuse/relay box, the 20A STOP fuse feeds power to the brake light switch. When the brake pedal is pressed, the inner brake lamps light. The underdash fuse/relay box also contains the 10A TURN BACK fuse which feeds power to the hazard switch and the turn signal relay. Relay output is fed to the combination switch and turn signal power is applied to the selected middle tail light. The fourth fuse in the underdash fuse/relay box is the 15A HAZARD fuse which feeds power to the hazard switch and turn signal relay. When the hazard switch is set, the turn lamps on both sides begin flashing.

Sep 18, 2012 | 2002 Suzuki Grand Vitara

3 Answers

Lost power to fuel pump


the oil pressure sensor has a 3rd wire which feeds to the fuel pump .. If you turn the ignition key on and do not hear the fuel pump running for 5 seconds, replace that oil pressure sensor. That sensor does turn the fuel pump circuit off once oil pressure is acheive and the the computer switches the fuel pum relay on to take over running the fuel pump

May 04, 2012 | 1999 Buick LeSabre

2 Answers

Need fuse panel layout for ford f150


I don't know if this will help but here are the position by numbers. I have the whole owners manual that I can send as a PDF if you want. Hope this helps. Good luck

Fuses

Position Amps Description

1 20 Trailer tow back-up and tail lamps

2 10 Air bag diagnostic monitor

3 15 Power locks

4 15 Air suspension

5 20 Horn

6 15 Audio system

7 15 Parking and tail lamps

8 30 Headlamps

9 15 Daytime running lamps and fog lamps

10 25 Auxiliary power point

11 - Not used

12 - Not used

13 - Not used

14 60/20 4WABS/rear anti-lock brake

15 50 Air suspension compressor

16 40 Trailer tow battery charge and stop/turn lamps

17 30 4WD transfer case shift motor and clutch

18 30 Driver power seat

19 20 Fuel pump

20 50 Instrument panel fuse panel ignition switch feed

21 50 Instrument panel fuse panel ignition switch feed

22 50 I/P fuse panel battery feed

23 40 I/P blower

24 30 PCM power

25 30 Power windows

26 - Not used

27 - Not used

28 30 Trailer tow electronic brake

29 - Not used

Relays

Position Description

1 Windshield wipers HI/LO speed

2 Windshield wipers run/park relay

3 Washer pump relay

4 Fuel pump relay

5 Horn relay

6 PCM power relay

Jan 28, 2011 | 1997 Ford F150 Regular Cab

2 Answers

1998 Jeep wrangler....turn signal intermittent


check your light socket at the back make sure everything is clean and all metal contacts free of corrosion. your having power feed back through one of your light socket.apply petroleum jelly to all electrical contact to avoid having problem again.

Nov 23, 2009 | 1996 Jeep Grand Cherokee

1 Answer

99 Rodeo Right turn signal makes brake lights blink


TURN SIGNALS WILL FEED BACK THROUGH THE TURN SIGNAL SWITCH.THEY ARE INDEPENDENT OUT SIDE ON THE CAR BUT NOT IN THE SIGNAL SWITCH.REPLACE THE SIGNAL SWITCH

Jan 02, 2009 | 1999 Isuzu Rodeo

1 Answer

2004 wrangler blinker problem


What other problem did you have before the signals quit? Something that stopped all functions from the signals has to be either a feed or ground IF the flasher is good. Signals feed. Hot wire from the flasher 1 and it should blink underload, but not with a test light or DVM. In other words using a test light the flasher wire should be powered steady. All the rest of the switch is switchable. You should also get a hot wire when the brake pedal is pushed. Check for power at the brake switch,key off.

May 14, 2008 | 2005 AMC Wrangler

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