LED turn signal issues
 

So I have United Pacific LED lights all around and my turn signals don’t work when my headlights are on but when they are off the turn signals work but as soon as i flip the switch the brake lights get bright as if you’re stepping on the brakes and don’t blink at all. I added 2 grounds in the back off the bed to frame and one off the block and frame.

Thanks ,
Ramiro

Re: LED turn signal issues
 

Do you have the United Pacific led flasher? I had the exact problem you are describing and I believe that was the fix.

Re: LED turn signal issues
 

JMD,

Yes I have the LED Flashers with the ground cable on them.

Thanks,
Ramiro

Re: LED turn signal issues
 

Are they United Pacific brand flashers though? There’s something about their flashers specifically that make them work with their LED tail lights.

Re: LED turn signal issues
 

JMD, not sure which brand my son purchased.

Ramiro

Re: LED turn signal issues
 

I've read installing a reverse polarity flasher is sometimes required. This maybe what you need.

https://www.raneystruckparts.com/led...tension-wires/

Re: LED turn signal issues
 

EL_C10 i have one of those flashers with the ground cable. The one my son ordered didn't come with the lower base.

Ramiro

Re: LED turn signal issues
 

While it will be a bit of time before I can install my United Pacific LED lights, this is what their flasher looks like. When I ordered from Speedway, they recommend this United Pacific flasher.

Re: LED turn signal issues
 

EL_C10 i have one of those flashers with the ground cable. The one my son ordered didn't come with the lower base.

Ramiro

Re: LED turn signal issues
 

Thanks, Rich72C10. looks like we need to purchase a new pair of flashers. Ours doesn't have the reverse polarity base.

Ramiro

Re: LED turn signal issues
 

Rich72C10 so If i purchase those new flashers with the reverse polarity base. Will that take care of my problem with the turn signals not working when the headlight switch is turned on? they work with the headlight switch turned off.

Ramiro

Re: LED turn signal issues
 

Hi Ramiro0727 - I couldn't say either way (I have my doubts). My brother still has my truck, he is finishing up a full SBC/TH350 rebuild. I am just collecting "parts" for little upgrades for it when it gets back into my hands!

But I am converting all the lights to LED. I got them from Speedway and most of them are United Pacific LED.

I just thought I post a photo of the United Pacific Flasher, so you could easily see it. In about two months I'll be able to feedback any issues I have or success :)

Re: LED turn signal issues
 

Ramiro- Im running LEDs all around (Except turn signals, those are next) and I can honestly tell you every truck is slightly different. What works on some doesnt always work for others. I will keep you updated once I install my turn signal LED lights. I might need the fever polarity adapter. I’ll let you know.
Cisco

Re: LED turn signal issues
 

I went through this problem with the lights being fully lit like the brake lights were on when you turned on the headlights. The UP flasher did not fix my issue. I ended up wiring in a dummy 1157 plug into the rear harness to add resistance to the circuit and all works well now. They also sell resistors you can wire in that will do the same thing. Now the UP flasher should help with your turn signal issue though. I had a thread on this in the electrical section about a month ago.

Re: LED turn signal issues
 

Interesting jessemthompson and a good read of your thread (link below). Glad you posted that about your 72 and I'll keep that in mind when I end up doing mine. I suppose this would have the potential to correct two things: Flashing Speed and

Tail light issues

While this YouTube is clearly for a newer Chevy, I suppose this 25 Watt load resistor could be the fix for the Brake Light intensity issue? I suppose this would have the potential to correct two issues: Flashing Speed and Brake Light intensity. Heck I might do this and return the "Flasher" and get a few bucks back.

How to Install a Load Resistor for LED Tail Lights

superbrightleds.com 1969 Chevrolet C10 Pickup Load Resistors
LED Light Load Resistor Kit - LED Turn Signal Hyper Flash & Warning Fix - 50W LED Load Resistor kit

Current Draw 2.25A (2250mA)
Ohms 6 Ohm
Wattage 50 Watts

O'Riley's
Sylvania Load Resistors For LED Mini Bulbs (Pack of 2)
Part # LOADRSLBX2

Re: LED turn signal issues
 

Due to heat that would occur with load resistors, I am thinking about these. If I am needing them after updating to LEDs (if I have Brake Light intensity issues).

Morimoto HD Load Resistor

Re: LED turn signal issues
 

Those LED Flashers, like above, contain a load resistor.

Re: LED turn signal issues
 

Interesting, which would make sense. I am not doing bulb replacements but whole light/lense replacements from speedway. I am just reading every thread I can on this subject to be ready for anything that pops up! I'd be very happy they they all just work but I do plan to install one at a time and test as I go too!

Re: LED turn signal issues
 

I ordered a pair of the reverse polarity adapters. Also I’m going to take a look at my turn signal switch.

Ramiro

Re: LED turn signal issues
 

You need the reverse polarity switch for the turn signal side, but not the hazard side.

Re: LED turn signal issues
 

I did the same thing with my truck.Had to put a couple of old style bulbs back in to make everything work right.Something about not enough voltage being drawn.

Re: LED turn signal issues
 

Bobbysgmc. Where did u put old style bulbs at? All the lights in my sons truck are LEd.

Ramiro

Re: LED turn signal issues
 

You have to wire in an additional 1157 plug. I did it under the bed of the truck. Just cover the bulb and wire it in before it splits between the tail lights.

Re: LED turn signal issues
 

Jessemthompson wire it before the the 2 lights? To which colored wire?

Ramiro

Re: LED turn signal issues
 

here is a wiring diagram - I assume the colors are correct - I got it from another thread that I have saved on this subject. Posted by Andy4639

Information needed on LED side marker lights

boo - its a thumbnail and you cannot see the original size but you can get the full size from the thread above.