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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Boot light keeps blowing fuse
BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun)
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#2
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Boot light keeps blowing fuse
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#3
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Boot light keeps blowing fuse
In article ,
wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. -- *OK, who stopped payment on my reality check? Dave Plowman London SW To e-mail, change noise into sound. |
#4
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Boot light keeps blowing fuse
On Tuesday, October 22, 2019 at 2:44:33 PM UTC+1, Dave Plowman (News) wrote:
In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. -- *OK, who stopped payment on my reality check? Dave Plowman London SW To e-mail, change noise into sound. About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on |
#5
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Boot light keeps blowing fuse
wrote:
On Tuesday, October 22, 2019 at 2:44:33 PM UTC+1, Dave Plowman (News) wrote: In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. -- *OK, who stopped payment on my reality check? Dave Plowman London SW To e-mail, change noise into sound. About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim -- Please don't feed the trolls |
#6
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Boot light keeps blowing fuse
Tim+ formulated the question :
Um, sounds like ******** to me. So the battery was running flat every day? +1 |
#7
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Boot light keeps blowing fuse
Truth probably was just a sticky switch or one timed to go off after a set
period, some switches were damped by some device to do that, Maybe they did it for a reason but it eludes me. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! Harry Bloomfield; "Esq." wrote in message ... Tim+ formulated the question : Um, sounds like ******** to me. So the battery was running flat every day? +1 |
#8
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Boot light keeps blowing fuse
On 23/10/2019 08:30, Tim+ wrote:
About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim Car batteries don't run flat every day just because there is a 5W load on them. If yours do then buy a working one. |
#9
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Boot light keeps blowing fuse
In article , dennis@home
wrote: On 23/10/2019 08:30, Tim+ wrote: About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim Car batteries don't run flat every day just because there is a 5W load on them. If yours do then buy a working one. 5W for 24 hours would be 120 watt hours; at 12v = 10 AH - quite a drain on a small battery, -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
#10
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Boot light keeps blowing fuse
dennis@home wrote:
On 23/10/2019 08:30, Tim+ wrote: About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim Car batteries don't run flat every day just because there is a 5W load on them. If yours do then buy a working one. True, I hadnt done the sums. You still wouldnt want one on all the time though. Wouldnt take many days of non-use to flatten the battery. Tim -- Please don't feed the trolls |
#11
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Boot light keeps blowing fuse
On Wed, 23 Oct 2019 09:59:20 +0100, "dennis@home"
wrote: On 23/10/2019 08:30, Tim+ wrote: About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim Car batteries don't run flat every day just because there is a 5W load on them. What about the sort of capacity battery that would have been found on something like that in 1979 in the middle of the winter? Say it was a 40Ah new, down to 30Ah because of it's age and now 15Ah because of the cold ... and it will only restart the engine when the battery is greater than 50% charged, then it can only take a (say) .5A parasitic load for 14 hours? I still don't believe a boot light wouldn't have a switch of some sort though, possibly a gravity one or a micro switch up in the hinges somewhere? Cheers, T i m |
#12
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Boot light keeps blowing fuse
In article ,
dennis@home wrote: On 23/10/2019 08:30, Tim+ wrote: About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim Car batteries don't run flat every day just because there is a 5W load on them. If yours do then buy a working one. Some of us remember the days of parking lights. No street lighting, so had to be on all the hours of dark. And with a weedy dynamo. -- *It was all so different before everything changed. Dave Plowman London SW To e-mail, change noise into sound. |
#13
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Boot light keeps blowing fuse
On Wednesday, October 23, 2019 at 8:30:08 AM UTC+1, Tim+ wrote:
wrote: On Tuesday, October 22, 2019 at 2:44:33 PM UTC+1, Dave Plowman (News) wrote: In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. -- *OK, who stopped payment on my reality check? Dave Plowman London SW To e-mail, change noise into sound. About 40 years ago my mother bought a Fiat 124 which was the first car I ever saw with a boot light. I was demonstrating this to my future father-in-law when we discovered it had no switch but was permanently on Um, sounds like ******** to me. So the battery was running flat every day? Tim -- Please don't feed the trolls No as it probably came on only when the driving lights were on |
#14
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Boot light keeps blowing fuse
In article ,
Dave Plowman (News) wrote: In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. Sorry - missed the bit about it blowing the fuse. ;-) If it's anything like my E39, a fractured wire or two where the loom goes into the boot lid isn't unknown. Because of constant flexing. -- *A cartoonist was found dead in his home. Details are sketchy.* Dave Plowman London SW To e-mail, change noise into sound. |
#15
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Boot light keeps blowing fuse
On 23/10/2019 15:58, Dave Plowman (News) wrote:
In article , Dave Plowman (News) wrote: In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. Sorry - missed the bit about it blowing the fuse. ;-) If it's anything like my E39, a fractured wire or two where the loom goes into the boot lid isn't unknown. Because of constant flexing. On a 3 year old 7 series? Standards have slipped since my day ;-) -- Cheers, Rob |
#16
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Boot light keeps blowing fuse
"RJH" wrote in message ... On 23/10/2019 15:58, Dave Plowman (News) wrote: In article , Dave Plowman (News) wrote: In article , wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Are you certain they are properly switched off when the boot is closed? Not flickering etc with movement? Some use a switch which works on the lid angle, rather than the sort operated by the doors for the interior lights. And that could be faulty. Light fittings designed for only short term use may well allow the bulb to get too hot if left on for long periods. Sorry - missed the bit about it blowing the fuse. ;-) If it's anything like my E39, a fractured wire or two where the loom goes into the boot lid isn't unknown. Because of constant flexing. On a 3 year old 7 series? Thats been rear ended twice Standards have slipped since my day ;-) Nope. |
#17
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Lonely Psychotic Senile Ozzie Troll Alert! LOL
On Thu, 24 Oct 2019 08:25:26 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: FLUSH senile asshole's latest troll**** **** off, senile pest! -- Website (from 2007) dedicated to the 85-year-old trolling senile cretin from Oz: https://www.pcreview.co.uk/threads/r...d-faq.2973853/ |
#18
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Boot light keeps blowing fuse
On Tuesday, 22 October 2019 13:22:55 UTC+1, wrote:
BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) If it's blowing a fuse there's a short somewhere. No mystery about that. You just gotta find it. And that's no fun. I'd start by removing the lamps so there's zero load, then replacing the fuse with a resistor, and monitoring the voltage on its output. Disconnecting bits where accessible will show you when the short goes away. NT |
#19
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Boot light keeps blowing fuse
In article ,
wrote: On Tuesday, 22 October 2019 13:22:55 UTC+1, wrote: BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) If it's blowing a fuse there's a short somewhere. No mystery about that. You just gotta find it. And that's no fun. I'd start by removing the lamps so there's zero load, then replacing the fuse with a resistor, and monitoring the voltage on its output. Disconnecting bits where accessible will show you when the short goes away. It might even be one of lamps (bulbs) -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
#21
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Boot light keeps blowing fuse
On 22/10/2019 19:39, alan_m wrote:
If one of the lights in in the boot lid there must be a connection at the edge of the moving part of the boot to the main body of the car. Usually wires running in some black corrugated trunking. As the trunking, and the wires inside, are flexing every time the boot is opened or closed this would be my first place to look for damaged wiring. You may have two wires where the insulation has failed and are shorting together. See the Youtube video related to a boot lid wiring breakage https://www.youtube.com/watch?v=o_iI37G9k48 Before dismantling anything just turn on the boot lights and pull and waggle the flexi trunking to see if you can get the fuse to blow (as indicated by the lights going out) -- mailto : news {at} admac {dot} myzen {dot} co {dot} uk |
#22
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Boot light keeps blowing fuse
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#23
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Boot light keeps blowing fuse
Harry Bloomfield wrote:
wrote on 22/10/2019 : I'd start by removing the lamps so there's zero load, then replacing the fuse with a resistor, and monitoring the voltage on its output. Disconnecting bits where accessible will show you when the short goes away. A small 12v lamp would be even easier to use, instead of a resistor. Lit would suggest the fault is still there, unlit that there is no short. +1 Just the method I used to find an intermittent short which turned out to be in the feed to a seatbelt clip illumination bulb. Very much not essential. Chris -- Chris J Dixon Nottingham UK @ChrisJDixon1 Plant amazing Acers. |
#24
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Boot light keeps blowing fuse
On Tuesday, October 22, 2019 at 8:51:59 PM UTC+1, wrote:
wrote on 22/10/2019 : I'd start by removing the lamps so there's zero load, then replacing the fuse with a resistor, and monitoring the voltage on its output. Disconnecting bits where accessible will show you when the short goes away. A small 12v lamp would be even easier to use, instead of a resistor. Lit would suggest the fault is still there, unlit that there is no short. Thanks to all for all the suggestions. I'll have a root around on Saturday. I did get tail ended twice last year.One was just a new bumper the other was severe enough to set off the protection system. Seat belts tightened, head restraint snapped vertical (triggered by a small explosive charge apparently). That may have some bearing though all the damage was repaired last year |
#25
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Boot light keeps blowing fuse
wrote
BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Most likely a pinched wire that blows the fuse occasionally. |
#26
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Lonely Psychotic Senile Ozzie Troll Alert! LOL
On Wed, 23 Oct 2019 05:06:47 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: wrote BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) Most likely a pinched wire that blows the fuse occasionally. Someone suggested that already, senile pest! Just what in hell makes you believe that anyone's answer only becomes valid when you senile cretin confirm it? -- Website (from 2007) dedicated to the 85-year-old trolling senile cretin from Oz: https://www.pcreview.co.uk/threads/r...d-faq.2973853/ |
#27
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Boot light keeps blowing fuse
3 years old? I'd be harassing the dealer. If it isn't covered by warranty it darned well ought to be!
Frayed or shorting connections are possible for sure, but shouldn't be happening on such a young car. Tim |
#28
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Boot light keeps blowing fuse
Yes disconnect lights one at a time as close to bulb as possible ran till a
fuse blows, if it does not with eater only on, then you have an over current situation or maybe a very low tolerance fuse. If either fixes it and you can pin it down by swapping, the junk the doff one and get another, if it still trips with no bulbs the short is in the wiring, probably where its bent or trapped somewhere by the boot lid. Its not rocket science. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! wrote in message ... BMW 7 Series 3 years old. Has tw lights in the boot. One under the parcel shelf and one in the lid. No sign of water ingress. Very strange. Any bright ideas out there (excuse the pun) |
#29
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Boot light keeps blowing fuse
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