Led bulb conversion w/ led flashers- Help

I have changed all of the bulbs on my 69 stage 1 to led ( not the headlights, they are halogen). I have everything working fine, but now when i use the turn signals or 4 way flashers with the parking or headlights on, the signals do not flash. I can hear the flasher working and see the indicator on the dash flashing, but nothing external. Just for reference, I have converted to Hella h4 halogen headlights with a Ron Francis harness (with relays) for the headlights, a must to make them work, other wise they shut down. Everything worked fine and now it doesn't. What the happened? Any and all help and advice is appreciated. THX

 

I looked back in my notes and I bought two of these United Pacific 90650 flashers with the ground wire. One is for the normal turn signals and one is for the hazards.

I have LED's in all the bulb locations see this thread on LED's that I and other's have used
https://www.v8buick.com/index.php?t...o-1972-skylark-gs.329221/page-14#post-3369794

 

Hello Utah455, Thanks for your response, I did purchase flashers with grounds and everything was working and then about a week ago went and checked all lights to make sure they all worked and no flashing with parking/headlights on. Otherwise, they all work fine. I tried a jumper from the ground at the flashers to the column bracket with no difference, I was going to move to tail and frt turn signals and try a jumper to ground for them. After reading the thread you gave me the link to, could it just be they are flashing and because of the bulb, I am not seeing it? again thanks for your help

 

You probably need resistors on left& right turn signals.
I recently went through this on my 92RMW everything would work til you turn parking lights on then no turn or 4ways.
I added a 50watt load resistor for each tail light good to go.
Chris

P.S. Take one of your front parking light bulbs out and put stock one back in and see if it works.If it does then you need the load resistor.

 

Sounds like you might have a grounding issue. I have all LED bulbs and those flashers and they don't get hot and tick over, they have a timer circuit.

 

Thanks got _tork, I just did the bulb swap and lo and behold the stock bulbs are working. also, thanks knuckle busted, I am going to start chasing grounds now, fun part is it at the flasher or all of the lights.

 

Follow-up, Grounds seem fine, but I did discover that, on the rear at least, when the bulb is inserted, but not turned fully in the socket the bulbs flash perfectly. I did try to insert a piece if wire, stripped to assist with the grounding of the bulb in the socket, with no change. WTH does this mean?

 

OK, that is a good clue. Maybe your socket is worn out. I've had luck using a small pick to bend them back up since they are springy.

 

I tried a whole different approach, I swapped out the two inside bulbs on the rear to incandescent and presto, everything works. It looks like the led flasher I have doesn't create enough resistance. I am going to look for a different flasher or just add 2 load resistors to the rear and put the Leds back in. so at least now I have turn signals at night.

 

When I converted to LED it required the electronic flasher module. Like this one. I installed the LED rear lights as well as the front headlights and turn signals. It actually required two of the modules. Everything works great for me

 

Hello 1969Lark, Thank you, I just ordered both a 2 and 3 prong flasher from Amazon. Give it a shot and see what happens.