H3 Bulbs ?

FAQ tech questions, please check if the answer to your question is in here before posting elsewhere.
nellyboyo
registered user
Posts: 325
Joined: Wed Sep 22, 2010 10:28 am
Main scooter: Lambretta
Contact:

Bought a lovely pair of chrome spots of epay for near enough nothing the other day and was planning to fix one low down the legsheilds on my ongoing project . Now I know i`m a bit thick , but when I wire them up to my DC power supply for a test the main H3 type bulbs don`t work ??
I`m obviously missing something ?????? :freak:
All this new tech ...bah
User avatar
RICSPEED
registered user
Posts: 3334
Joined: Sun Jan 04, 2009 11:30 pm
Location: YORK

have you wired the spot on a separate switch ?
Its in bits scooter club: www.facebook.com/groups/132415046859320
nellyboyo
registered user
Posts: 325
Joined: Wed Sep 22, 2010 10:28 am
Main scooter: Lambretta
Contact:

No , I just wired up to my bench power supply . I also stuck it across a diesel car battery I had hanging about in case there wasn`t enough current.
Didn`t work ???
User avatar
RICSPEED
registered user
Posts: 3334
Joined: Sun Jan 04, 2009 11:30 pm
Location: YORK

are they dip and main or just single beam spots ?? .. either the bulb is duff or a connection in the holder
Its in bits scooter club: www.facebook.com/groups/132415046859320
nellyboyo
registered user
Posts: 325
Joined: Wed Sep 22, 2010 10:28 am
Main scooter: Lambretta
Contact:

Well... they are single beam spots with a blue led halo. The led halo works ok .
But the main drew a large current from my power supply on both of the units so I was doubtful the bulbs were somehow short circuit in both units .
I`m an instument tech by trade so I`m not that daft :roll:
.... I just assumed there must be something I don`t know about this type of bulb ... daft as it sounds ??
nellyboyo
registered user
Posts: 325
Joined: Wed Sep 22, 2010 10:28 am
Main scooter: Lambretta
Contact:

Anyone ???
User avatar
vRSG60
registered user
Posts: 266
Joined: Mon Apr 02, 2012 3:56 pm
Main scooter: Lambretta Li125 Lambretta GP20
Location: Barrowford, Lancashire
Contact:

Not a lot to know. The lead is +ve and the body should be earthed to -ve
I get my kicks out on the floor.
User avatar
coaster
registered user
Posts: 3125
Joined: Wed Jan 07, 2009 12:35 pm
Location: London and Norfolk
Contact:

vRSG60 wrote:Not a lot to know. The lead is +ve and the body should be earthed to -ve
What he said but you haven't mentioned the wattage of the lamps, they could be anything up to 120watts :shocking: Also you've not mentioned what you are fitting them to, I'd say it's likely that your headlamp will go quite dim when you switch them on unless you arer DC and have a decent battery fitted.
nellyboyo
registered user
Posts: 325
Joined: Wed Sep 22, 2010 10:28 am
Main scooter: Lambretta
Contact:

Well now I feel daft......I`m away at work at the moment so I can`t check.....they are either some huge wattage or dead short ???
I did put them across a big diesel battery I had lying about with no joy.
OK so if they are 120 watt, what a sensible value to put in there ? I`ve got a halogen headlamp and led rear . Its only really for the look I want to fit it.
User avatar
coaster
registered user
Posts: 3125
Joined: Wed Jan 07, 2009 12:35 pm
Location: London and Norfolk
Contact:

LED lamps could be the answer
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 6 guests