AlastairA Posted January 8, 2023 Share Posted January 8, 2023 Hi,Building a 420R at the moment and have wired in the lights (LED version). One of the lights is working just fine, the other has an issue with the daytime running light (side light) not working. Wondering if anyone has a wiring diagram or knows the wiring configuration of the lights?Many thanks,Alastair Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 8, 2023 Member Share Posted January 8, 2023 Email sent.Is this all within the headlight bowl?Do you have a multimeter?Jonathan Link to comment Share on other sites More sharing options...
BigCol Posted January 8, 2023 Share Posted January 8, 2023 Have you swapped the headlights over? That would determine whether the issue is with light (if problem also swapped) or the wiring (if same as before) Link to comment Share on other sites More sharing options...
BigCol Posted January 8, 2023 Share Posted January 8, 2023 From my 2013 Assembly Guide: Link to comment Share on other sites More sharing options...
SM25T Posted January 8, 2023 Share Posted January 8, 2023 LED lights are polarity sensitive. Have you checked the polarity of the supply ? Link to comment Share on other sites More sharing options...
AlastairA Posted January 9, 2023 Author Share Posted January 9, 2023 Hi All,Many thanks indeed for all your helpful comments. The issue was with a headlight assembly that arrived from Caterham with a piece of masking tape across the front marked "Wrong Lense" - so I was quite concerned.With the help of the wiring information above, I found that no power was getting to the LED assembly on the Red wire (sidelight). The red and black cables had spade connections halfway along the length, but were wrapped in insulation tape rather then heatshrink (which was evident in the other headlight). On removing the insulation tape I found a rather bodged crimp on the spade connector. Restoring that connection fixed the issue.Many thanks again! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 9, 2023 Member Share Posted January 9, 2023 Well done. And thanks for adding the solution.Jonathan Link to comment Share on other sites More sharing options...
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