Ainsley Posted Sunday at 09:00 Share Posted Sunday at 09:00 First post build problem 🙂 My headlights dont work any more. The dash lights dont work either. But the headlight flasher and indicators work. So I imagine its a fuse right ? Given both lights (main and dipped) stopped and the flasher, brake lights and indicators all work. So its probably not my dodgy wiring. But when I pulled all the fuses out, non seemed to be broken. Do I need to look harder ? Anyone got a map of which fuse does what, so I can stick it inside the fuse box for next time. Is it a relay ? Am I destined to just use the car in the daylight now 🙂 Anyway, the sun is out so Im heading for a 1000 miles in the first week ! Link to comment Share on other sites More sharing options...
OldAndrewE Posted Sunday at 09:33 Share Posted Sunday at 09:33 Visual inspection will not always detect a blown fuse, and apparently a continuity test is not always reliable either. If you have got any spares you could try replacing them all. If it is a blown fuse you have of course got the question of why has it blown Link to comment Share on other sites More sharing options...
ScottR400D Posted Sunday at 09:57 Share Posted Sunday at 09:57 Are the relays all seated properly? Link to comment Share on other sites More sharing options...
Toby S Posted Sunday at 11:02 Share Posted Sunday at 11:02 a few points when my stop working:- IS it all lights (dipped, full beam and side) - - each are on different fused circuits If all, or just side lights working, maybe the switch - Take out and pull apart and and keen up all contacts, could also be a connection on the full beam/dip switch In cases when it was just dip or main beam not working, check behind the fuse box, as you may find on of the contacts or wires has popped out Also check the earth. I find it's usual a combination of the above Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted Sunday at 12:21 Member Share Posted Sunday at 12:21 Sorry, on a small screen. There’s a very recent thread with my suggested diagnostic pathway, which includes measuring voltage at the main light switch. Pls can someone add a link. Layout of fuses and relays is in the Owner’s Handbook. But beware variations. Map your own to be certain: it will save time. Jonathan Link to comment Share on other sites More sharing options...
Ainsley Posted Sunday at 14:03 Author Share Posted Sunday at 14:03 Its all the headlights, which now looking at the owners handbook fuse instructions, I see is on two different circuits. So I will have a fiddle around the back of the switch first. I can also have a look for the annoying indicator buzzer and tape it up while Im ferreting about behind the dash. In the meantime I need to update my insurance, there is no way Im going to do just 2000 miles a year. I've done 200 already today and its only 3pm. I've had the car for two weekends and put 800 miles on it 🙂 3 Link to comment Share on other sites More sharing options...
John Vine Posted Sunday at 15:29 Share Posted Sunday at 15:29 3 hours ago, Jonathan Kay said: There’s a very recent thread with my suggested diagnostic pathway, which includes measuring voltage at the main light switch. Pls can someone add a link. This one? JV Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted Sunday at 17:23 Member Share Posted Sunday at 17:23 1 hour ago, John Vine said: This one? JV Thankyou, John Jonathan 3 hours ago, Ainsley said: Link to comment Share on other sites More sharing options...
Ainsley Posted yesterday at 07:04 Author Share Posted yesterday at 07:04 Thanks for the link, I will go through it and hopefully it will shed some light on my problem 🙂 Link to comment Share on other sites More sharing options...
BigCol Posted yesterday at 09:13 Share Posted yesterday at 09:13 2 hours ago, Ainsley said: Thanks for the link, I will go through it and hopefully it will shed some light on my problem 🙂 but not initially from your headlights... best of luck getting a fix (given the flashers work, I’d discount fuse or relay but look at the main switch as the issue) Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted yesterday at 09:18 Member Share Posted yesterday at 09:18 The high beam flasher might use a different fuse from the main light switch. Jonathan Link to comment Share on other sites More sharing options...
Ainsley Posted yesterday at 09:31 Author Share Posted yesterday at 09:31 Yeah, I suppose as the dip, main and dash lights are all on separate fuses its probably a switch issue. The flasher working means there is power to the lights, so its not an issue with me wiring up the lights that has failed. I will sit in the car upside down with my head under the dash and fiddle with the switches tonight. On a separate thought - given its not likely to be a build issue, would this not be a warranty issue and I can just get Caterham to fix it for me ? That would save time and effort on my part. Id rather now be thrashing the tyres off it not fiddling with it in the garage. Link to comment Share on other sites More sharing options...
John Vine Posted yesterday at 09:57 Share Posted yesterday at 09:57 22 minutes ago, Ainsley said: I will sit in the car upside down with my head under the dash and fiddle with the switches tonight. For me, that's a sure-fire recipe for a ruptured back (or something). You might find it more comfortable just to remove the switch(es) from the dashboard. Good luck with the detective work. JV Link to comment Share on other sites More sharing options...
Ainsley Posted yesterday at 10:00 Author Share Posted yesterday at 10:00 Its the 620 style dash, not the push out plastic things. They are the fancy metal toggle ones. I think you can unscrew the ring and push them into the dash. I will have a look later. Link to comment Share on other sites More sharing options...
John Vine Posted yesterday at 10:03 Share Posted yesterday at 10:03 Ah, posh that is. I can see why you mentioned warranty. JV Link to comment Share on other sites More sharing options...
Ainsley Posted yesterday at 10:34 Author Share Posted yesterday at 10:34 I've also bought some nice LED headlights, perhaps I should just throw money at the problem and get someone to fit them and fix the problem. While its still daylight I want to spend my time driving, not fiddling 🙂 Looking at the weather forecast however, I may as well fiddle tonight and tomorrow night. 1 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted 23 hours ago Member Share Posted 23 hours ago 2 hours ago, Ainsley said: I will sit in the car upside down with my head under the dash and fiddle with the switches tonight. You can sometimes get a good look with a smart ‘phone’s camera and screen. And I’d definitely identify and fix the problem before changing the lamp unit. Jonathan 1 Link to comment Share on other sites More sharing options...
Ainsley Posted 3 hours ago Author Share Posted 3 hours ago Right, I'm still in the dark 😞 I checked all the fuses by removing them and swopping them for spares - no effect. Even the fuse for the flasher, which according to the other thread mentioned, was the cause of non working lights. I checked all the wires behind the switches & fuse box. All seem good. Power goes to the lights as the flasher works. But main/dipped and dash lights don't work. All the fuses are good, the car has been used for 5 days, wires are tight on the connections, its brand new. I can only think its a dodgy switch. They worked one day, then next morning they didn't. I'm going to call Caterham Silverstone later and see if a warranty or money solves the problem. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted 3 hours ago Member Share Posted 3 hours ago Have you checked the voltage at the main light switch, as in the linked thread? Jonathan Link to comment Share on other sites More sharing options...
Ainsley Posted 3 hours ago Author Share Posted 3 hours ago No. I can do that tonight. Its raining here so I may as well tinker some more. Am I checking that voltage comes to the switch then and therefore not out of it to confirm the switch is the fault ? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted 3 hours ago Member Share Posted 3 hours ago Yes, this will localise the fault: no feed to the switch, fault in the switch, fault downstream of switch (including relay)… Jonathan Link to comment Share on other sites More sharing options...
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