Help! I am stumped - Triumph Forum: Triumph Rat Motorcycle Forums
Air Cooled Twins Talk Discussion of Hinckley Triumph Twin related matters and topics.

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post #1 of 16 (permalink) Old 08-17-2019, 12:49 AM Thread Starter
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Help! I am stumped

I am changing out my turn signals and am unable to get the left rear signal to work.
https://www.triumphrat.net/air-coole...le-lights.html
All the others wired in fine and work fine if I should leave the rear left disconnected or leave it hanging out of the housing with the earth wire looped to the screw hole.
As soon as I put the fixture in the housing and wire it as the others are, none of the blinkers work at all.
They may light once and fade out.
I'm not great with electric bits.
I have no idea what to do.
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post #2 of 16 (permalink) Old 08-17-2019, 01:13 AM
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Did you change your blinker fluid?


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post #3 of 16 (permalink) Old 08-17-2019, 01:28 AM
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Try switching signals side to side. Might be a bad light, at least will eliminate possibility.

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post #4 of 16 (permalink) Old 08-17-2019, 07:18 AM Thread Starter
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Working with the original taillight housing and wiring is a pain in the butt.
I had worked to get everything in place and then wired the rear right signal and tested
I had accidentally wired the left on the right side.
When the housing was off the fender it was upside down and when I flipped it around and mounted that was my mistake.
I then pulled the housing off the fender again and switched the leads coming from each wire.
Orange/black pair (Left) and Brown/black pair (right) each connect to their own white and black leads into the signal.
I have pulled those left leads and made sure there are no breaks in the wire.
I swapped out the bulb as well. After each test, my results are always the same.
Disconnected totally, the other 3 signals work.
If left hanging out of the signal housing it works.
screw it in, all fail.
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post #5 of 16 (permalink) Old 08-17-2019, 08:04 AM
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Do those have LED bulbs? LEDS have to be wired up correctly to work. I put LED bulbs in the stock blinkers on my Rocket 3 and had the same problem. I needed to unplug and switch the wires connected to the offending blinker and it worked. With Incandescent bulbs it doesn’t matter how they’re connected.
If they’re not LED then I can’t help.
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post #6 of 16 (permalink) Old 08-17-2019, 08:08 AM Thread Starter
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Quote:
Originally Posted by CanberraR3 View Post
Do those have LED bulbs? LEDS have to be wired up correctly to work. I put LED bulbs in the stock blinkers on my Rocket 3 and had the same problem. I needed to unplug and switch the wires connected to the offending blinker and it worked. With Incandescent bulbs it doesn’t matter how they’re connected.
If they’re not LED then I can’t help.
They are the standard filament bulb that came with the Lucas style signals.
I tried swapping the bulb and it made no difference.
It's something in the earth wire connection, I believe, I just have no idea what exactly.
As I re-worked each signal, I would make the connections, tuck wires into the housing and screw together.
I then would test and mount the amber lens.
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post #7 of 16 (permalink) Old 08-17-2019, 08:26 AM
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Quote:
Originally Posted by W_Edwards View Post
They are the standard filament bulb that came with the Lucas style signals.
I tried swapping the bulb and it made no difference.
It's something in the earth wire connection, I believe, I just have no idea what exactly.
As I re-worked each signal, I would make the connections, tuck wires into the housing and screw together.
I then would test and mount the amber lens.
I dont see how the bulbs could be the cause, if it works when the light is hanging there then I'd think you could eliminate that as the problem.
Are you sure that you dont have some short in a wire inside the signal, either in the tube that connects the light to its mounting point? or a wire that when you twist it into place is getting exposed and touching something it shouldn't.
if all the lights work as should when the one particular light is hanging there and as soon as you mount it everything goes to sh!t I'd look real hard at that light, inspect all the wires in it closely, seams like your problem is in that area.
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post #8 of 16 (permalink) Old 08-17-2019, 09:00 AM Thread Starter
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OMG.... I am such a flippin moron
On the back, orange feeds to black of the signal
Black feeds to white of earth
on the other side, brown feeds to black and white to earth
So then, in the front.... do I need to swap wires?
white to black of signal fixture
black to earth?
When I took apart the OEM fronts I noted the black wire lead to the feed of the bulb.
Therefore I made it the same with the Lucas single wire.
At this point all are working.
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post #9 of 16 (permalink) Old 08-17-2019, 09:56 AM
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Did you change your blinker fluid?


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That is a mythe the new ones are sealed only require water every 8 days.

Last edited by vitesse; 08-17-2019 at 06:25 PM.
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post #10 of 16 (permalink) Old 08-17-2019, 09:42 PM
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I am about to change over to LED blinkers. Do I need to use a different blinker fluid?! Synthetic? What weight?

Jeff Hancock
Richmond, VA, USA
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