Question about 1988 Volvo 740

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I have a 1988 volvo 740 headlight problems

I have a 1988 volvo 740 and my low beams and front turn signals stopped working. All fuses are good as far as i can tell and i put in a new headlight relay.And they are still not working relay is clicking when i turn on the lights. All suggestions welcome.

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Most common problem is burned connectors at the relay that switches from high to low beams. I think that in '86, the relay was still inside the car above the driver's left foot. If not there, it is toward the front of the passenger compartment on the driver side, between the front inner fender and the battery. If it clicks when you move the dimmer switch, you can follow the click to find it. If the wires are good, the relay contacts may have failed.
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1 Answer

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1 Answer

My 1992 Corolla DX headlights won't come on! I have changed the fuses and the bulbs. The relay clicks when turning the switch and the wiring seems to be in good condition but I am no electrician. The...


Power flows from the battery to the main fuse. Then it flows to the control coil and contact side of the headlight relay. When you turn on the headlights, the headlight switch provides ground to the control coil in the headlight relay and that operates the contacts. The contacts allow power to flow to the right and left hand headlight fuses. Power flows to the headlights. The headlight switch is what provides ground to the high and low beams on the headlights.

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1 Answer

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3 Answers

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