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Hello too all ...

I got a 1979 xs750 for $100 and it need some TLC ..

I need to wire a taillight up since the bike did not come with one ..

The bike has three colord wires yellow, blue , black my new taillight has two red and black .

I tryed and got it to light up but when I pull the break it does not light up brighter ..

What is the right wiring for the taillight ??

Any help would be great .

  • Moderator

Hello too all ...

I got a 1979 xs750 for $100 and it need some TLC ..

I need to wire a taillight up since the bike did not come with one ..

The bike has three colord wires yellow, blue , black my new taillight has two red and black .

I tryed and got it to light up but when I pull the break it does not light up brighter ..

What is the right wiring for the taillight ??

Any help would be great .

If it is like my xs400 with a twin bulb rear lamp (UK spec)!

you should have 2 x twin filament bulbs,

Black is common ground

Yellow is the brake light spliced into two for both bulbs

Blue is taillamp with a double female bullet connector from the loom side.

hope this helps

Drewpy

  • Author

Okay the new brake light has one bulb that is the taillight and the brake light ..

From the bike i have a black wire , yellow , and blue .

On my new aftermarket taillight breaklight i only have a red and black wire .

So do i wire the yellow and blue to the red ?

Then wire the black to the black ?

thanks

If it is like my xs400 with a twin bulb rear lamp (UK spec)!

you should have 2 x twin filament bulbs,

Black is common ground

Yellow is the brake light spliced into two for both bulbs

Blue is taillamp with a double female bullet connector from the loom side.

hope this helps

Drewpy

  • Moderator

Okay the new brake light has one bulb that is the taillight and the brake light ..

From the bike i have a black wire , yellow , and blue .

On my new aftermarket taillight breaklight i only have a red and black wire .

So do i wire the yellow and blue to the red ?

Then wire the black to the black ?

thanks

can't see that working!!!

you need black as earth and the two more wires as each goes to the two filaments in the bulb. One for normal lamp the other brighter for brake lamp.

you need an earth as the brackets are usually rubber mounted.

open up the lense and check you have the correct bulb in. easy to check as you take out the bulb and it should have two brass contacts for each filament side.

If it hasn't you can't use it for braking/tail lamp

drewpy

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