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Q: Where is the bulb failure relay on a 1990 Volvo 780?
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Turn lights and rear brake lights don't work Volvo 740 turbo 1987?

Bulb warning failure relay, a big round and red relay, back the ashtray


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Where is the bulb failure sensor located in a 1991 Volvo 240 sedan?

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Where do you find bulb failure sensor on 240 gl Volvo?

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How do you change the bulb failure sensor relay Volvo 940. It's visible behind the fuse panel but how does one remove the empty equipment bay that contains the cigar lighter?

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Try the bulb failure relay. Its the red round one under the dash. I had the same problem and finally changed it and no more problems. fredgallaher@comcast.net


What are the tail light bulb sizes and positions for a 1990 Volvo 240 DL?

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Volvo 940 1995 - the cockpit light warning comes up when you switch on the engine and all bulbs are working - How can you clear the warning off?

If you mean the bulb failure light; The bulb failure detector compares the current drawn by the left bulb to the right bulb and lights the bulb failure light if the currents are not equal. I have never seen a bad one. The usual reason the light is still lit after the bad bulb is changed is because the new bulb is not an exact match or the contacts are corroded. Try two new bulbs. Good Luck


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1990 240 DL - Brakes lights are out - no owners manual - Fuse box open which fuse do you check for this?

Check all the fuses and replace all of the blown fuses. If you still have no brake lights check your brake light switch. The brake light circuit also runs through a red cylindrical shaped relay called the "failure sensor" which lights and indicator bulb in the intrument cluster if a brake light bulb or some other bulb has failed. Internal failure in this part will often have the symptom "No brake lights".