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MG TD TF 1500 - LED Turn signal buzzer

All of the lights on my car are LEDs except the fog lights. The turn signals work fine. But I had problems when hooking up a buzzer. The buzzer works but when the turn signal shuts off the buzzer continues to buzz slower and slower finally falling off to pathetic whine. I assume that has something to do with the fact that the turn signal relay is for LEDs. Has anyone hooked up a buzzer to LED turn signals?

Tim
TD12524
Tim Burchfield

I use LED tail lamps (only) in all my MGs and two use a buzzer as an audible indicator. I do not have any such problem. I assume you mean you use an electronic flasher, not a turn signal relay. If so, try using the Tridon EL13 flasher. I have had the best luck with these in conjunction with my LED light board inserts.
Lew Palmer

Lew, I'm using what looks like the traditional round turn signal relay but it is designated for LEDs. It has a separate ground wire in addition to the three wiring spades. The housing is plastic. It looks like the Tridon EL13 but with a separate ground wire. The buzzer is a 12 volt two wire device from Radio Shack.

Tim
Tim Burchfield

Usually none of the round can flashers are fully electronic. Find a square can one and try again.
Lew Palmer

Will do. Thanks.
Tim Burchfield

The round can "electronic" ones often use a capacitor to help trigger the mechanical relay. When they are shut off, the capacitor can drain back into the load. Not a problem with the LEDs, but the buzzer may be getting the drain off, thus sounding and fading away.
Lew Palmer

Lew, thats pretty much what I thought. Of course I couldn't have explained it as well as you did.

Tim
TD12524
Tim Burchfield

This thread was discussed on 25/09/2017

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