Trying to update an old RT2 to LED's

[Sledge]

Yep, trying to go all LED for my brake, running, and turn signal lights.

I searched through several threads and did not find what I needed, so I'm looking for some expert help. The car is a BDR, chassis 168. 2004 build. White plastic bulb housings. I was part way into my conversion attempt, with all lights LED except for the rear turn signal bulbs. As long as the running lights or headlights were not on, the front and back turn, stop, and running lights work fine. Turn on the running lights or headlights, and the right front turn signal does not work. Thinking the old style 1156 incandescent bulbs may be affecting the turn signal relay, I placed 1156 LED's into the rear turn signals and things got much worse. With no running lights on, the right rear turn signal would not work, but the left turn signals would, albeit at a slower pace. I inserted a different but older digital signal relay and recovered some functionality but not all. The installed signal relay has a blue plastic case containing a circuit board, and a white wire extending out of the back of the blue case, apparently a ground wire. No ID otherwise. Both were three-pronged.

I need to note that the brake/rear running lights are Street Magic motorcycle LED's that I connected directly to the brake/tailight wiring, bypassing the crappy 1056 socket.

Recommendations for a new signal relay? Do I need a three-prong or is a two-prong better for my old girl's wiring? I don't have any resistors wired into this system, but I was told an LED signal relay was all I needed. Something is still amiss however and I don't know what it is.

All help appreciated in sorting this problem.

Thank you!

[Unique427]

Two prong electronic relay:
https://www.superbrightleds.com/more...asher/781/835/

Three prong electronic relay:
https://www.superbrightleds.com/more...asher/782/836/

Electronic flashers, unlike a mechanical flasher relay are polarity sensitive.
If you get no flash or a hyper-flash situation, create a couple pigtail wires
and swap the connections. This usually fixes it.

Example of pigtail wires for two prong:
https://www.memotronics.com/extensio...0cm-23-6-18ga/

Remember if you have 4-way hazard flashers that's another relay that needs to be upgraded as well.

[spdbrake]

I ran into much the same issue on my BDR. Rear turn and brakes worked fine with the LEDs. Added the front turn LEDs and then no front or rear flashing. Tried another flasher unit like Unique suggest and no change.
Added resistors to the rear turn signal circuits and all worked fine.

Then I ran into the same issue with the headlights on. The early BDRs used the Hella headlight with the built in parking lamps.

I switched my front turn bulbs back to incandescent and planned to revisit the project once I switched to Lucas style tribar headlamps. Which I switched out about a year ago. I'm glad you brought this up as I'd forgotten to finish, lol

[Sledge]

spdbrake:

Let me know if you succeed with getting the LED turn signals to work with the running/headlights on. I installed a 3-prong no-load led signal relay, with ground wire, and everything works great until running/headlights go on. Then I can't get a signal out of the right front. Right rear and all other lights work fine.

Only left turns at night for me? Or I could adopt the new, way-to-common California standard of letting other motorists guess....

Thanks!