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Headlights only one working

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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cichy1012
Posts: 17
Joined: 10 Jun 2015, 16:46
Year and Model: 1999
Location: usa
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Headlights only one working

Post by cichy1012 »

1994 Volvo 940 one headlight is working. New bulb in other one not working. If I put the brights on they both work. Have voltage at the plug, voltage at the relay.
Is it the relay itself? Is there another in the cluster I can swap to check?

cichy1012
Posts: 17
Joined: 10 Jun 2015, 16:46
Year and Model: 1999
Location: usa
Has thanked: 1 time

Post by cichy1012 »

OK something new. If anyone can help I’d appreciate it. As per my previous post I thought when I put the brights on that both of them were working. As of right now my passenger side headlight only works but my driver side does not. When I put the brights on the driver side bulb lights up but I have nothing on the passenger side. This makes no sense and I change the relay

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volvolugnut
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Joined: 19 Jan 2014, 09:51
Year and Model: 2001 V70
Location: Midsouth USA
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Post by volvolugnut »

Check the condition of the wires near the headlights. The insulation may be failing and giving strange results. This may also cause various, changing faults.
volvolugnut
2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple parts cars.

cichy1012
Posts: 17
Joined: 10 Jun 2015, 16:46
Year and Model: 1999
Location: usa
Has thanked: 1 time

Post by cichy1012 »

Ok so the voltage I get on the side that works is 10v on one pin and 12 v on the other pin.
The side that’s not working is only showing 10v on each pin. Ugh wiring looks good

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