madmole Posted August 8, 2015 Share Posted August 8, 2015 He's already said the headlamp worked fine when plugged in other side ergo the bulb works Quote Link to comment Share on other sites More sharing options...
Barry T Posted August 8, 2015 Share Posted August 8, 2015 Hi In the past when only one headlight was working on my cars the fault has nearly always been a bad earth next to the faulty headlight. Although there can be 12 volt at the light the earth wire can be corroded in the wires or connection to the body. !2 volts and low amps will work a small bulb but on a large bulb it needs the amps for it to work, it just sounds like a bad connection probably corroded. What I would do Take a good earth to the bulb and see if it works. If not take a good fused power supply to the bulb, you will then know which circuit the fault is on. I have also had bad connections on the bulb. Be careful not to short out any wires or you may damage the electronics, then you are talking money Barry T Quote Link to comment Share on other sites More sharing options...
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