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940 Electrical/ Headlights Issue - Can Not Figure it Out - Relay? Fuses?

posted by  Steve on  Wed Aug 19 01:23 CST 2009
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last visit: Fri Oct 24 07:16 CST 2014
[RELATED]

It will be very tough to diagnose this without an OEM wiring diagram manual: get one for about $30 from Volvo. They are essential in any dodgy cases like this one.
Weird effects can appear from corroded grounds: check the FAQ regarding how to inspect, deoxidize, and protect your grounding points. A corroded ground point will screw up every circuit attached to it in unpredictable ways depending on current loads.
--
See the 700/900 FAQ at the drop-down menu above right.






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