Jonathan Kay
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Everything posted by Jonathan Kay
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That should be a black wire from the loom to the multi-way connector near the lamp unit. But I don’t know where the other end connects to the body/chassis. Might be at the front of the transmission tunnel. if you suspect a bad earth then this is the type of fault where checking continuity is NOT enough. You need to measure resistance or test with a temporary wire to a known good earth. Jonathan
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Yes, this will localise the fault: no feed to the switch, fault in the switch, fault downstream of switch (including relay)… Jonathan
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Have you checked the voltage at the main light switch, as in the linked thread? Jonathan
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Anyone wired up a battery charge point to their fuse box cover ?
Jonathan Kay replied to Ainsley's topic in TechTalk
Usual advice: consider including a couple of USB charging sockets. Jonathan -
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
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The high beam flasher might use a different fuse from the main light switch. Jonathan
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IIRC it switches the live feed. And uses the common earth near the lamp unit. Jonathan
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Thankyou, John Jonathan
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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
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I’m on a ‘phone so pls pardon brevity. Yes, check plunger action. You can open the standard switch and try to improve the contact, but there’s a spring just waiting to make a bid for freedom. Do it in a box. But there’s a much better switch available: lots of references in the archives. Jonathan
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Ah yes, I remember it well. From the Tool Tube Bulk Buy. Thanks for all the work Jonathan
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There's a lot of experience and advice in the Seven Insurance thread: Jonathan
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Immobiliser 5AS issue with a MEMS 1.9 ecu on a 1.6 k Series SS
Jonathan Kay replied to Markn23's topic in TechTalk
"Andrew is the champion!" Jonathan -
Well done, and thanks for adding the answer. I was running out of ideas, as you could tell. Jonathan
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Thanks Have you checked the "side lights" fuse? Jonathan
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Thanks If *you can post that here we can then work out why there's no feed to the main light switch. Jonathan * Or I! : - )
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Thanks. That narrows it down. How are you identifying the fuses and relays? There are several different layouts... Jonathan
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We hang ours on a line tied to a tree. Jonathan
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Jonathan
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I use it all the time, but I'd like some improvements. Have you found the filters on https://www.caterhamlotus7.club/discover/unread/ ... Read Status and Time Period? Jonathan
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Assuming that you now have the original headlamp reconnected: 1 Set the multimeter to 15 V DC or similar. 2 Measure the voltage across the battery. 3 Release the light switch. Identify the terminals from the wiring colours. With one probe on a good earth throughout measure the voltage at each terminal with the switch in each position: OFF, SIDE, HEAD. Let us know the results. Jonathan
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Thanks The server's now up, but I can't find the article... was it a GTKY7? Jonathan
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There's a vast amount of advice in the archives, including tools: https://duckduckgo.com/?q=site:caterhamlotus7.club+front+wheel+bearing And a Low Flying article, but that server seems to be down. Jonathan
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I suggest completely disconnecting the new lamp unit. And then testing all of those again and letting us know the result. Jonathan
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Please send me a Private Message with your email address. Jonathan
