ferny
Club Retro Rides Member
Posts: 979
Club RR Member Number: 13
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Peugeot Expert 2005 I bought some Nighteye H4 bulbs (picture of type below) for the van. They've got three banks of LED's on them. On dip two banks light up, on main the third joins in. I've checked this on the bench with a 12v battery. When in the van, they only work as intended when a standard halogen bulb is plugged in at the same time. When on dipped I can make them work correctly by unplugging and plugging in a halogen bulb. With one LED bulb plugged in, or both plugged in, all three LED banks illuminate. Even with the column switch on dipped. Huh? 🤔 I'll try them in the Herald at the weekend as I know the wiring circuits in that are completely separate. I'd have thought a 15 year old van would be the same? Seems a odd thing to happen to me, can anyone explain?
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Last Edit: Dec 3, 2020 18:51:48 GMT by ferny
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Rich
Club Retro Rides Member
Posts: 6,226
Club RR Member Number: 160
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Check your van doesn’t use a single power and dual switched earth arrangement to operate the bulbs. If it does you’ll need to employ some relays to change the polarity round to run the LED lamps. Be aware that these could land an MOT fail for ‘light source not compatible with lens’. Not trying to be a killjoy, literally just letting you know.
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mk2cossie
Club Retro Rides Member
Posts: 2,937
Club RR Member Number: 77
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Check your van doesn’t use a single power and dual switched earth arrangement to operate the bulbs. If it does you’ll need to employ some relays to change the polarity round to run the LED lamps. Be aware that these could land an MOT fail for ‘light source not compatible with lens’. Not trying to be a killjoy, literally just letting you know. Not a fail for LED units fitted to halogen units If there's no pattern is a different matter
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ferny
Club Retro Rides Member
Posts: 979
Club RR Member Number: 13
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Thanks for the heads up with the idea. I still don't understand how that would allow them to work with one LED and one halogen but not with two LED's though? 🤔
I've just tried them in the Herald and they work fine, so I won't be annoying the seller!
I'm aware of the MOT issue. They've a good beam in the van (when one was working!) but if it's too bright or poop I won't use them. At the moment the van headlights are so poor that on an unlit road the indicators light up road signs better! I'd be close to calling them dangerous and they're certainly the worst I've ever used.
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Rich
Club Retro Rides Member
Posts: 6,226
Club RR Member Number: 160
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Check your van doesn’t use a single power and dual switched earth arrangement to operate the bulbs. If it does you’ll need to employ some relays to change the polarity round to run the LED lamps. Be aware that these could land an MOT fail for ‘light source not compatible with lens’. Not trying to be a killjoy, literally just letting you know. Not a fail for LED units fitted to halogen units If there's no pattern is a different matter 4:1:4, Rfr C, surely if a tester wanted to be picky. But if I saw a decent beam pattern I indeed wouldn’t have an issue.
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mk2cossie
Club Retro Rides Member
Posts: 2,937
Club RR Member Number: 77
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Not a fail for LED units fitted to halogen units If there's no pattern is a different matter 4:1:4, Rfr C, surely if a tester wanted to be picky. But if I saw a decent beam pattern I indeed wouldn’t have an issue. States that a light source is a bulb or LED, so not a failure in itself
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ferny
Club Retro Rides Member
Posts: 979
Club RR Member Number: 13
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Roight, I've found out whats happening but not why. The main beam is getting 5v even when not in use, and this is enough to light the LED. I've stripped the column switch and it's no different other than the dodgy horn switch now being dead.
New switch (only a tenner) ordered and I'm adding relays which are plugged into the original H4 plugs. So in other words, I'm bodging a work-around from wire and parts I have sitting around as it's too bloody cold to investigate further!
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mk2cossie
Club Retro Rides Member
Posts: 2,937
Club RR Member Number: 77
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Sounds like CANBUS or bulb failure circuits to me. It may get the raging hump with relays added, but good luck Also, have you actually checked the beam pattern is good with the LED replacements? Good pattern and no light scatter I hope
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ferny
Club Retro Rides Member
Posts: 979
Club RR Member Number: 13
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No CANBUS, it's a 15 year old van from the land of surrender monkeys. Can't think why the wiring is going iffy. This week it decided the blower would come on all the time even when turned off and after changing an instrument bulb today it didn't want to start...
Beam pattern looks ok so far, but I've not got both lights working yet and I'm only on the driveway. That's why I'm using the original H4 plugs for the relays. If it's not right I can just pull it all out and go back to standard easily.
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ive found led's to be quite poor in cars when added to filament bulb lenses and reflectors, they may appear bright but the distance and clarity of light is not a patch on a good quality bulb. probably just needs new headlamps from my experience of old french headlamps, the reflector loses its bright coating SEVEL is italian btw
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Last Edit: Dec 5, 2020 20:00:09 GMT by welshpug
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mk2cossie
Club Retro Rides Member
Posts: 2,937
Club RR Member Number: 77
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Well, what do I know! Worked at Peugeot for 7 years about 15 years ago, and they had CANBUS back then And the Peugeot Expert was a mix up of PSA and Fiat tech, so there's no telling what they did back then
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