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Lights

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Lights

Postby jonno » Wed Apr 30, 2025 8:10 pm

I'm having some light issues.I have no side lights, Indian GP, with 3 stops on the ignition switch. The side lights don't come on, second stop on the ignition switch,but do when the headlight is switched on. I've put a multi meter on the connections and they all seem connected, the side and headlight terminals. Also when the lights are off and I apply the brake, both the brake light and rear light come on together.Any help appreciated.
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Re: Lights

Postby lofty » Thu May 01, 2025 2:42 pm

I would hazard a guess at a dodgy or non existent earth connection somewhere..
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Re: Lights

Postby jonno » Tue May 13, 2025 8:55 pm

Got a new ignition and bulb holder from Scootopia. Lights all work apart from the side lights. Scootopia website says move the purple to the grey terminals if you have no side lights, but this doesnt work. Where do the side lights get its power from and how can I measure if it getting power with a multi meter? TIA
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Re: Lights

Postby Toddy » Tue May 13, 2025 9:35 pm

jonno wrote:Got a new ignition and bulb holder from Scootopia. Lights all work apart from the side lights. Scootopia website says move the purple to the grey terminals if you have no side lights, but this doesnt work. Where do the side lights get its power from and how can I measure if it getting power with a multi meter? TIA


You can use a wire to bridge a feed for the sidelights from the main brown feed
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Re: Lights

Postby jonno » Wed May 14, 2025 8:02 pm

I tried that Toddy and it illuminated the side light and the main bulb. These seem to be on the same circuit ?
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Re: Lights

Postby Toddy » Wed May 14, 2025 8:03 pm

Oh dear , Shouldn’t do if you have a purple or grey in the block for it to go with that’s usually the side light circuit
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Re: Lights

Postby jonno » Wed May 21, 2025 4:59 pm

Well I've given up, will run it without side lights,they've never worked anyway, and now I've got historic vehicle status. The connections on the new bulb holder were different from the original I had.Cant be the rest of the,unknown,loom? I've 2 spare red wires in the headset. The brown is the supply to everything inthe headset?
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Re: Lights

Postby Toddy » Wed May 21, 2025 5:01 pm

Brown is the he main feed from the loom where are the reds from switch , ignition. Loom?
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Re: Lights

Postby jonno » Thu May 22, 2025 10:08 pm

Never been able to find the other end. its an Indian restored GP bought from Camlam many years ago. Ill look in Stickys book, see if I an see anything.
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