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Author Topic: Installed rear LED turn signals now headlight and rear lights dont turn on?  (Read 423 times)

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Offline Megadavetastic

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Hello everyone! I recently bought new LED turn signals from ebay for my Bolt and thought they would look badass. Well I wired them into the harness and when I went to turn the bike on presto.... nada! It seems like my front headlight is out and the new LED turn signals dont turn on either. I still get the rear stock LED brake light to turn on but i dont get any changes when i press front and rear brakes... ALSO, my front turn signals are on but the indicators dont work.

Any ideas to start troubleshooting my boneheaded problems?



Offline DrM

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I had a lot of issues with with lights and turn signals going out on me, and I didn't add anything other than just rerouting wiring for new handlebars.  Turns out that control case on the left side of the handlebars (hi/lo beam switch, turn signal switch, horn) has a lot of wiring going into and out of it, and it is easy to disturb. You might want to check all your fuses with a continuity or ohm meter (visual check doesn't always find electrical faults).  I wound up having to replace a couple of fuses and leave one screw out of the control case to make things work again.  Intermittent electrical faults can be very difficult to trouble shoot.  Good luck.

Offline Megadavetastic

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Thanks for the tips DrM. I think I have a general idea of what went wrong and what to do.. Looks like I need to check fuses and all the wiring. Ill keep adding updates to this post just in case people run through these issues again. If I reach a wall im just taking it into a shop. Fingers crossed it all works out!

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Offline Megadavetastic

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I am going to summarize my issues and how I fixed them so people have a reference in the future. Im sure you can find answers on other discussions in this forum as well.

My issues stemmed from changing LED turn signals WITHOUT disconnecting the negative terminal of the battery FIRST..  I pulled the wiring harness from the rear fender off and blew a fuse. I checked the fuses with a multimeter and confirmed which one was dead. You can check on YouTube how to check a fuse for continuity.. I replaced every fuse just in case.. The fuses are mini 7.5, 15 and 20 A. They can be found at your local auto parts store..

I wired all LED lights to the original connectors to keep it "plug and play." I do have a bit of hyper flashing but nothing too bad. The next step to remove the hyper flashing and have the correct amount of current flowing to each LED is to install an LED flasher relay or install a load resistor on each LED light wire (Too tedious IMO).. this info can be found on this site...

Thank you and good luck if you are looking at this.

Offline joko

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Nice job and good job updating the thread w/ how you fixed it.  Were you able to tell the fuse was blown by visually looking at it also?  I've never seen a blown fuse that didn't look blown so just curious.

I didn't install a flasher relay when I changed my signals, to me the hyperflashing makes you a bit more noticeable.  But, it's sort of been in the back of my mind to try...if you do end up installing one can you post up about it?

Offline lunkhead

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The next step to remove the hyper flashing and have the correct amount of current flowing to each LED is to install an LED flasher relay or install a load resistor on each LED light wire (Too tedious IMO).. this info can be found on this site...

You only need one resistor if you put it in the relay.

https://www.yamahastarbolt.com/how-to's/oem-flasher-relay-modification

C-SPƎC

Offline ljackson28

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I just replaced my signals with the high tech speed x arc lights. My signals and brake lights work but my running lights wonít turn on. Iíve been told to put a resistor on, but I was curious if that could be the only issue? I already changed all my fuses since I blew them by not disconnecting the negative as well..

Offline DrM

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I just replaced my signals with the high tech speed x arc lights. My signals and brake lights work but my running lights wonít turn on. Iíve been told to put a resistor on, but I was curious if that could be the only issue? I already changed all my fuses since I blew them by not disconnecting the negative as well..
I would suspect you blew another fuse - at least you should do a continuity check on them again.  But if you opened up the lighting and horn housing on the left handlebar, then you may have a wiring discontinuity -- I know I did when I opened it up to reroute that wiring bundle for taller bars.