Question about 1990 Volvo 740

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Hello, when i hit the brakes with headlights on,the right rear turn signal bulb lights up and the brake lights don't on the same side and the running lights go off on that side as well

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Low of ground.check the ground wire

Posted on Nov 11, 2010

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2011 Honda CRV. Right brake light is on with headlights; hit brake, left brakelight brightens;right remains dim. Headlamps off, hit brake, only left lamp lights. Bulb works. Is it a fuse problem?


Your right brake light is fried. The fact that you see rear lights on both sides has nothing to do with the fact that the right brake light is out. Your brake lights and rear running lights are not the same bulbs. Go to Advance Auto Parts. They may even replace it for you. Not a big deal.

Jul 02, 2017 | Honda Cars & Trucks

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Brake light trouble right side brake light will not come on but both flashers work also turn signals work older ford truck what could the problem


I have to think the problem is inside the turn signal switch, a poor internal connection. You know the brake signal first goes through the turn switch before it goes to the bulbs. That is why the brake lights and rear turn signal lights share the same filament in the bulb, and the same wire going to those lights. The only difference is the turning side light is affected by the turn signal flasher, causing blinking, while the other side- the non turning side-does not go through the flasher relay, but straight to the bulb from the turn signal switch. Change your turn signal switch and I believe you will solve the problem. Let me know, okay?

Sep 16, 2015 | Ford Cars & Trucks

1 Answer

Brake lights and turn signal lights


Hello, my name is Steve and the bulb for the left and right turn signal is 1157 . This has the 4-way flasher/turn signals and Brake light elements in the bulb.

if you are doing this yourself, make sure you look at the guide pins on the side of the base of the bulb and line them up with the corresponding guide. If you fail to do so, the turn sigal flash will be faster than usual. Take care on how you remove the bulbs.

I hope this will help you, Steve

Sep 03, 2015 | 1996 Lincoln Town Car

1 Answer

Left bleaker and break light not working. Turn signal works bleaks faster than right side.


Has the vehicle been in an accident on the left rear side. First check the bulb to be sure it is not defective, trade it out with the side that works properly to test. If the bulb works well then My thought are you may have a shorted wire. The turn signal flasher works by heat build up within the flasher the heat is caused by the load of the bulbs, the load heats the metal spring causing it to open the circuit then as quickly as it cools down the circuit closes again lighting the bulbs.
There is also a possibility of a defect in the turn signal mechanism on the steering column. The turn signal switch on many models does three different things on many models that use the same bulb element / or bulb for brake and turn on rear of vehicle. It controls the circuit for brake light by sending power both left and right side rear when turn signal is in neutral position then when turn signal is in left turn the switch cancels brake light power to left side rear and supplies flasher power to left side while maintaining brake light supply to the right side rear, and so on opposite when the right turn is chosen on turn signal switch. The turn signal indicators on the dash normally run off the same circuit as front turn signal bulb only which is also controlled by turn signal switch. Front has turn signals but no brake light.
I think there is an additional load on the left side rear turn circuit and it could be either a wire that is shorted or the turn signal switch if the same bulb element is used for both functions.
Often times if trailer lighting is connected the flasher will also blink a little faster because of the extra load of additional bulbs.

Feb 15, 2015 | Cars & Trucks

5 Answers

98 chevy lumina Rear window break light works, but rear break lights don't, also right turn don't work?


I can almost 100% guaranty the turn signal switch is the problem. Power for the brake lights starts at the brake switch. power then splits from there and the third brake light gets power directly from the brake switch. Since the turn signal and the brake lights are on the same bulb power for the brake lights is routed through the turn signal switch. the switch depending on what position it is in will allow brake power or turn signal power to there respective left or right brake/turn bulbs.

If you hold your foot on the brake pedal and wiggle the turn signal and or play with the hazard switch the brake lights will almost always intermittently start to work. this will confirm a bad turn signal switch which is pretty common on GM vehicle with this style setup.

Apr 05, 2013 | 1998 Chevrolet Lumina

2 Answers

I have 89 bronco 2 my brake lights turn signals both work my tail lights don't work have check fuse n blubs what might be the problem


The turn signals and brake lights use the same circuit and filament in the bulbs. The tail lights are on the other circuit which comes from the headlight switch.
Do you have power on the tail light fuse ?

Feb 25, 2013 | 1987 Ford Bronco II

1 Answer

No turn signals, 1 driver brake light bad, ABS light on. 2002/2003 CVPI


Sounds like you have 'ground' issues. Apply the brakes using a broom stick or more apropriate tool so that the brake lights are activated. Then go to the brake light that is not bright enough. using a test-light with a sharp pointed probe, poke the ground wire close to the bulb (usually a black wire) make sure the test light is attached to a grounded bolt. if the brake light gets brighter with ground added, you need a new ground wire. Splice it in to the existing wire & attach it to a bolt. Lights should work better with proper ground. (each bulb has a positive post & neg. post, don't add ground to the side with power coming through it from Battery (+)(red light on test light) - probe wires FIRST with test light to find (+) POS. Hot wire, and leave that one alone.

Aug 09, 2012 | 2003 Ford Crown Victoria

1 Answer

Weird tail light problem


HI Matt,
Your issue sounds like a fault, most likely in the rear lights. Current is feeding from the brake light circuit, into the running light circuit. The most common causes are a bulb filament broken and touching the running light circuit, and loss of ground.
observe the rear lights closely and you should get a clue as to which light is failing....but if not, just pick one....
I would run a temporary ground and test again, if no results, pull the brake light bulbs...
Transient current is often difficult to wrap your mind around, until you understand what can happen.
Doc

Mar 08, 2012 | 2006 Jeep Grand Cherokee

2 Answers

My brake light and signal light stopped working on my 1998 dodge neon on drivers side back can you help?


Does any lights on the right side work? It sounds like the ground connection to the assembly is loose.

Jan 04, 2011 | 1998 Plymouth Neon

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