SOLVED: Turn Signal/Parking Light Weird Issue

[Machlen]

I just recently installed the LED turn signal assembly from LMC Truck on my 1990 C1500 and I'm experiencing a similar problem where the passenger side flashes quickly with the headlights on, but flashes normal with them off. Would an LED flasher relay be a potential fix for this?

Yup - that's exactly what was happening for me. If you've already verified that the LED is installed correctly (some are polarity-specific, make sure it's flipped the correct way in the socket) then yes, I would give the LED flasher relay that I linked a try, especially since it's such a cheap and fast fix. EP36 was the correct flasher size for my '93 K1500, while others have reported EP29. I would take your existing flasher into the parts store and verify the pins match up to make sure you get the correct flasher the first try, haha. Best of luck - let us know!

 

[Cackalacky]

Yup - that's exactly what was happening for me. If you've already verified that the LED is installed correctly (some are polarity-specific, make sure it's flipped the correct way in the socket) then yes, I would give the LED flasher relay that I linked a try, especially since it's such a cheap and fast fix. EP36 was the correct flasher size for my '93 K1500, while others have reported EP29. I would take your existing flasher into the parts store and verify the pins match up to make sure you get the correct flasher the first try, haha. Best of luck - let us know!

Mine aren't the individual bulb like yours. It's more of a light assembly https://www.lmctruck.com/lighting/parklight/cd-1994-98-led-parklight-set

You can look at the pictures of them here and see how they connect to the existing sockets https://www.ebay.com/itm/ANZO-LED-P...044&customid=fdff09af93bb196c4fc76f616a92596b

I'll try to get around to changing this out this weekend and report back.

 

[Cackalacky]

Yup - that's exactly what was happening for me. If you've already verified that the LED is installed correctly (some are polarity-specific, make sure it's flipped the correct way in the socket) then yes, I would give the LED flasher relay that I linked a try, especially since it's such a cheap and fast fix. EP36 was the correct flasher size for my '93 K1500, while others have reported EP29. I would take your existing flasher into the parts store and verify the pins match up to make sure you get the correct flasher the first try, haha. Best of luck - let us know!

Mine ended up needing the EP36 as well and it seems to have fixed the issue

 

[Machlen]

Mine ended up needing the EP36 as well and it seems to have fixed the issue

Awesome! Hopefully this thread can help many more people to come with similar issues.