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post #1 of 5 (permalink) Old 12-02-2012, 12:05 PM Thread Starter
Grand Prix 250
Main Motorcycle: 2016 T120
Join Date: Feb 2012
Location: Los Angeles
Posts: 64
Turn Signal Wiring

Hi everyone.

New to modding, but determined to learn. I have replacement turn signals that I want to install, but have a question about the wiring. This is related to the wiring of the front turn signals and where they plug in inside the headlight bucket on my 2012 Thruxton.

The existing wires have a plastic clip that my aftermarket wires don't have (I got them from British Customs). Do I cut the existing wire below the clip, and splice the new wire to it so I can utilize the clip?

If I do splice the wires, do I twist them together & tape with electrical tape, or should I use a product like Solder-it paste (something I found online; it's nothing I've ever used before).

That's the only way I can think of on my own. Thanks for any advice!

Bonus Questions:
If by some brain-lapse I get the wires wrong, will the signals simply not work, or will it cause significant damage? Also, what's that goop covering all the electrical connections?


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post #2 of 5 (permalink) Old 12-02-2012, 04:16 PM
Grand Prix 125
Main Motorcycle: Thruxton
Wyrd Ollie's Avatar
Join Date: May 2012
Location: Brisbane, Australia
Posts: 33
British Customs do sell a wiring harness that you could use to avoid cutting and splicing. It's only $20 or so.

I'll be doing the cut and splice thing shortly on my '12 Thrux, though, because I forgot to buy the harness. I think I'll just solder the clips from the stock indicators onto the rizoma wiring connectors I bought (which don't have the right connections, lol).
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post #3 of 5 (permalink) Old 12-02-2012, 04:30 PM
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Location: Columbia, MD
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Buy the writing harness if you want a simple plug and play. I bought turn signals from BC as well. If after you wire them, both flash at the same time, you may be experiencing what many others have commented on this forum. It has to do with the peculiarities of the indicator light in the instrument cluster that both signals are connected to.

Search the forum for workarounds depending on your application. For me, i just swapped out the new bulbs for the stock ones.

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post #4 of 5 (permalink) Old 12-02-2012, 04:38 PM Thread Starter
Grand Prix 250
Main Motorcycle: 2016 T120
Join Date: Feb 2012
Location: Los Angeles
Posts: 64
Oh yes - I see the harness. Makes it so much easier!

Thanks for the help!
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post #5 of 5 (permalink) Old 12-03-2012, 01:39 PM
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Main Motorcycle: 2012 Thruxton 900 Bianca
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Join Date: Apr 2012
Location: Roseville
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Thread Jack time.

I bought signals from BC as well. However, mine don't always work. For instnace: i lost a bulb last week. When i put the new bulb it still doesn't work. If i use the left signal those work. But if i try the right side i get nothing. Then if i try the left again those now dont work. THen i can power the bike down and restart and the left side works again. I've tried re connecting them a number of times and had a heck of a time. i'm also running out of wire to re strip and crimp.

Can anyone tell me which wire on the bike and which on the signals are the hot. I'm planning to lengthen the lines a little this weekend to make them easier to work on and get better connectivity. I'll get some heat shrink to keep the connectors protected and dry too.

I'll get some of those BC connectors today.

Thanks in advance.
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