Turn Signal Question... Because I'm stumped!

[Egore]

Good afternoon everyone!

I've been trolling the forum for a while looking for an answer to a problem I'm having with my friend's 66 Belvedere II, but I haven't been able to figure this one out. Figured I'd join and see if someone has an answer...

So, Here's the deal:

Car has been sitting for a while, and needed a lot of electrical components replaced - Headlight switch, turn signal switch, dimmer switch, bulbs, cluster needed to be repaired, etc. I replaced all the cluster bulbs and external lighting bulbs with LED's. Everything lights up, but here's what I'm having trouble with:

After installing the cluster and turn signal switch, I found that the stock flasher wasn't working properly. I can probe the flasher with my DMM and have battery power on the BLACK wire going into the flasher... However, if I probe the RED wire at the flasher I have approximately 7 volts... No turn signal indicators and the bulbs at the turn signals won't light up. Tried a different flasher, same results.

NOW... If I install a solid state flasher for LED's, I have battery voltage to both sides of the flasher, the indicator lights on the dash illuminate, and all the proper bulbs light up.

Problem is, NOTHING FLASHES!!

I have added supplemental grounds in the rear of the car because the grounding at the tail lights was sketchy at best, and the front turn signal housings are mounted in the grill and are metal, and I have Ohmed these at zero ohms on the housing side to the battery, so I am pretty sure they are grounded.

Does anybody have an idea what I might be missing here? My alcohol bill has risen substantially since I took on this project...

 

[radical rob]

LEDs require different flasher to work. Check pin orientation on what you have. Will need two of them

 

[radical rob]

Forgot to mention, flasher should have a ground wire from it as well

 

[Egore]

Forgot to mention, flasher should have a ground wire from it as well

Really? Okay - I'll try that! Thanks for the heads up!

 

[Egore]

Alright! Correct flasher, if you need one for your project, is NAPA P/N "EL12L1".

I found that I had to move the red and black wires in the connector, then find a place to ground the pigtail.

https://www.google.com/aclk?sa=l&ai...=2ahUKEwiGu7iFxYb8AhWD11MKHezJAr0Qvhd6BAgBEEE

 

[conv67bdere]

Slightly different explanation on this . . .

Electronic flashers are "directional", so if the Electronic flasher is not working, you might have to swap the power leads in the connecting plug.

Additionally - some places will attempt to sell you a "polarity switcher" plug that they claim will fix the problem - Note that it also swaps the power leads.
Don't let them fool you - they usually charge about $5.00 for the polarity switcher - just pull the pins from plug swap them, and stick them back in - simple.