Adding turn signals FLHT
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Road Captain
Joined: Apr 2015
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From: So Texas
Adding turn signals FLHT
I bought a used 06 FLHT recently. Luckily, the bike was largely stock so I'm not dealing with a ton of bolt on crap or wiring messes. The previous owner installed what I will refer to as parade lights in the fairing. They are amber flashing lights that are hooked into the aux switch using a clean factory-type connector. Each light has a hot and a ground. I was considering connecting them to the turn signals instead of the switch but I wasn't sure what the load might do to the system. They are LED lights that obviously have some sort of module in them that makes them flash. Looking at my book it looks like I would tie into the black wire for ground and blue & brown wires for left and right signal. I hate splicing wires but I don't see any auxiliary plug to feed them to. Any help or thoughts would be appreciated.
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Road Captain
Joined: Apr 2015
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From: So Texas
No the factory lights are still there and hooked up. These were added as accessories and wired to the aux switch. I want to remove them from the switch and tie them into the signal lights.
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Joined: Apr 2012
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From: North Florida
On my skematic I have brown for the right violet for the left, two different connectors.
You could always buy the connectors and have jumper between the factory connectors and splice in there.
But splicing if done right is not considered butchering.
I don't believe your tssm/tsm will have a problem with the extra draw, it is the other way that is the problem.
You could always add a relay but doubt that is needed.
I am curious as to how it flashes and how you can doable that, have you looked inside yet?
I would think they are timed together so one would feed the other?
You could always buy the connectors and have jumper between the factory connectors and splice in there.
But splicing if done right is not considered butchering.
I don't believe your tssm/tsm will have a problem with the extra draw, it is the other way that is the problem.
You could always add a relay but doubt that is needed.
I am curious as to how it flashes and how you can doable that, have you looked inside yet?
I would think they are timed together so one would feed the other?
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Road Captain
Joined: Apr 2015
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From: So Texas
You are correct, brown and violet. I figured they were wired in sequence as well but they aren't, I've got orange & black coming from the aux switch feed, that hits the light connector where it simply splits into two power/ground leads heading to each light. All I can figure is that the flashing modules that are part of the lights themselves are timed differently (like one side has a permanent one second delay). That shouldn't matter though if they are just hooked individually to the flashers, although they might not work properly if I turn on the 4-ways. I need to find a good plug to use for the tie-in, I was thinking that a 4-wire trailer harness might work nicely. As far as the splice itself I was going to cut the wire on the light side of the harness, solder in my jumper, then heat shrink the connection. Is there a better way perhaps? I certainly don't want a mess!
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Road Captain
Joined: Apr 2015
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From: So Texas
Decided to try this out tonight, here is what I found:
The 12v that hits the turn signal is momentary and doesn't stay hot long enough to trigger my auxiliary signals. So I need to find a lead that is constant hot when the signals are on, which I assume is at the TSM itself. Back to the books!
The 12v that hits the turn signal is momentary and doesn't stay hot long enough to trigger my auxiliary signals. So I need to find a lead that is constant hot when the signals are on, which I assume is at the TSM itself. Back to the books!
Outstanding HDF Member
Joined: Apr 2012
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From: North Florida
Decided to try this out tonight, here is what I found:
The 12v that hits the turn signal is momentary and doesn't stay hot long enough to trigger my auxiliary signals. So I need to find a lead that is constant hot when the signals are on, which I assume is at the TSM itself. Back to the books!
The 12v that hits the turn signal is momentary and doesn't stay hot long enough to trigger my auxiliary signals. So I need to find a lead that is constant hot when the signals are on, which I assume is at the TSM itself. Back to the books!
Last edited by Harleycruiser; Apr 24, 2015 at 06:09 AM.
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Road Captain
Joined: Apr 2015
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From: So Texas
The back of the light is epoxy sealed. Something interesting: the light itself has 4 wires, two of which are hooked up. Wonder if the other two bypass the delay somehow?
ETA: nope, tried running hot to these other two wire, no light. They must have some other feature...
ETA: nope, tried running hot to these other two wire, no light. They must have some other feature...
Last edited by SiggerTX; Apr 24, 2015 at 08:11 AM.
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Thread Starter
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Road Captain
Joined: Apr 2015
Posts: 603
Likes: 14
From: So Texas
Good news ! I was able to determine that these lights are made by Whelen and they are indeed programmable. I was able to program them off the strobe and into a solid mode, now the turn signal works just fine.
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