GRiSO ghetto
Would you like to react to this message? Create an account in a few clicks or log in to continue.


12425 - Established June, 2013 - all GRiSO, all the time...
 
HomeRegisterLog in

 

 Rear light unit not ok

Go down 
+4
lcjohnny
kiwi dave
Pete Roper
Deepdive
8 posters
AuthorMessage
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 6:44 am

After turning ignition switch the rear light did not illuminate.
Front light however did.
After several attempts with the switch it worked but stopped when using brake.

measured 12volt in the plug for braking and normal light.
It seems that my rear led light is on its way to GRiSO heaven.

Pulled on the wiring but no light. Cleaned the plug no result.
Can't find anything that is related to my kind of issue.
Seems like this does not happen verry often.

Sombody a suggestion?

New rear light costs 130 euro grrrr

Back to top Go down
Pete Roper
GRiSO Capo
GRiSO Capo
Pete Roper


Posts : 10398
Join date : 2013-05-29
Age : 67

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 7:11 am

Yup, it sounds like it's gone and deaded itself. Being an LED light I imagine there is a transformer in it somewhere to step down the voltage. Chances are that has shat the bed. As you say, failures are rare, I think I've seen two since 2005, on Grisos at least. They do come up on fleabay from time to time but given how reliable they generally are perhaps it would be best to just buy one while they are still available and hope that it remains sound.
Back to top Go down
kiwi dave
GRiSO Capo
GRiSO Capo
kiwi dave


Posts : 735
Join date : 2014-04-23
Age : 76

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 4:10 pm

The bulbs were all incandescent originally.  The headlight was pathetic, so it was first to be replaced -I fitted an OSRAM 7" Round Black Led Headlight (105W).

Tail light is normally second to gain attention.  It too was an incandescent duel filament bulb, which is usually replaced with a dual LED setup.

But losing both tail-lights at once is not common.  Perhaps the common return wire has lost contact with the frame or battery negative.  Simple check with a short piece of wire will determine if it has.
Back to top Go down
kiwi dave
GRiSO Capo
GRiSO Capo
kiwi dave


Posts : 735
Join date : 2014-04-23
Age : 76

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 4:12 pm

Pete Roper wrote:
Yup, it sounds like it's gone and deaded itself. Being an LED light I imagine there is a transformer in it somewhere to step down the voltage

Sorry Pete, but transformers do not work in a direct current environment.
Back to top Go down
Pete Roper
GRiSO Capo
GRiSO Capo
Pete Roper


Posts : 10398
Join date : 2013-05-29
Age : 67

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 5:18 pm

Cool. That's why I leave it up to clever people to answer technical electrical questions as a rule Laughing
Back to top Go down
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Wed Aug 24, 2022 11:20 pm

Will visit TLM today. Maybe they want to test the taillight. If failed, ill buy a new one.
Sometimes the light will illuminate. After hitting the brake all fall out.
Back to top Go down
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Thu Aug 25, 2022 1:21 am

Taillight start working . The mighty GRiSO repaired itself.
Think the electrical spray did it´s job.  
(though i think the complaint will occur soon)
Back to top Go down
lcjohnny
GRiSO Capo
GRiSO Capo
lcjohnny


Posts : 1447
Join date : 2016-01-25
Age : 68

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Thu Aug 25, 2022 1:50 am

Deepdive wrote:
Taillight start working . The mighty GRiSO repaired itself.
Think the electrical spray did it´s job.  
(though i think the complaint will occur soon)

This points to Kiwi-Dave's point about the "common return" or earth/ground wire.

If more than one electrical component is jointly wired in a plastic insulated box (like the rear light unit)
then a poor or intermittent earth/ground connection for the whole unit means that one component may reach earth through the other component.
so you get apparently weird effects

Check the earth return - blue wire

bjor likes this post

Back to top Go down
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Thu Aug 25, 2022 6:05 am

Indeed, Kiwi was right.
The reason why i checked again this morning.
Thanks ghetto.
Back to top Go down
eighteight
Grignapoco
Grignapoco
eighteight


Posts : 150
Join date : 2022-02-24

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Thu Aug 25, 2022 11:17 am

Pete Roper wrote:
perhaps it would be best to just buy one while they are still available

Took that to heart and ordered one for the shelf
Back to top Go down
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Tue Sep 20, 2022 10:18 am

Complaint was intermittent. So bought new from TLM.
Solved the issue.
Seems like the taillight can be opened. Assume nobody ever did, cause normaly there´s no issue with the taillight´s of GRiSO[You must be registered and logged in to see this image.]
.

lcjohnny likes this post

Back to top Go down
terenceslh
Squinternotto
Squinternotto
terenceslh


Posts : 3
Join date : 2022-04-12

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Mon Apr 17, 2023 4:39 am

Deepdive wrote:
Complaint was intermittent. So bought new from TLM.
Solved the issue.
Seems like the taillight can be opened. Assume nobody ever did, cause normaly there´s no issue with the taillight´s of GRiSO[You must be registered and logged in to see this image.]
.

I recently faced with the same issue as well, wanted to take out the unit and check if connections are welded in. How does one open up the rear light unit ?
Back to top Go down
BrianD
Don Abbondio
Don Abbondio
BrianD


Posts : 161
Join date : 2015-12-19

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Mon Apr 17, 2023 8:42 am

The tail light unit is a bit of a pain to take apart as the flat cover on the back is held on with glue/mastic but a heat gun will work. all the LEDs are surface mount and in my case it was moisture that keeps on breaking the LEDs.

Need to try and split it again but I used CT-1 last time Sad
Back to top Go down
Deepdive
Grignapoco
Grignapoco
Deepdive


Posts : 102
Join date : 2020-02-29
Age : 59

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Mon Apr 17, 2023 9:10 am

In the Nissan 350Z scene they make use of an oven. Google on it. The gleu will be softened and therefore easier top open with a bit of force and tools. Is youtube the best friend again?
Back to top Go down
Oz1200Guzzi
Don Abbondio
Don Abbondio
Oz1200Guzzi


Posts : 6080
Join date : 2014-03-13
Age : 69

Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1Mon Apr 17, 2023 6:34 pm

LEDs are simple devices and the current through them is limited by resistors so as not to exceed the rated current for the particular LED. Often the LEDs are strung in series, still with a current limiting resistor.

There may be a broken track on your tail light circuit board. These are often extremely hard to see but easy to repair. If you have someone that is good with electronics, they may be able to repair it as a spare.
Back to top Go down
Sponsored content





Rear light unit not ok Empty
PostSubject: Re: Rear light unit not ok   Rear light unit not ok Icon_minitime1

Back to top Go down
 
Rear light unit not ok
Back to top 
Page 1 of 1
 Similar topics
-
» Electrical Problem - No rear light or tag light
» Rear light
» Service light and oil light coming on
» Oil light on a 16' GRiSO
» Installing LED headlight unit

Permissions in this forum:You cannot reply to topics in this forum
GRiSO ghetto :: The Ghetto :: GRiSOLOGY-
Jump to: