Join Date: Oct 2005
Location: Pensacola, Florida
Quick flashing with LEDs
Thanks KLFX300 for the info about the EP34.
I just installed "trailer" LED tail lights on my bike and had a few issues. First off, the flasher would go into panic mode, like a bulb was burned out. I got an EP34 as suggested by KLFX300, and that did indeed work like the stock flasher, but still went into panic mode. So, I opened it up (very easy to do, mine was a Tridon Stant brand) and could see three resistors, a integrated circuit chip, and a 4.7 uF capacitor on a circuit board. Figuring that the capacitor was used for pulse timing, I removed it and replaced it with a 10uF tantalum capacitor (Radio Shack). If you try this, make sure to observe the polarity on that capacitor --- mine was "positive" toward the edge of the circuit board. My guess was right, the new capacitor slowed the pulse rate down to something quite nice. I lost the "burnt filiment" feature, but the only place with filiments now is in the front and I can see them operate.
The next problem was the logic of using trailer lights with combined turn and brake LEDs. So, I got one of the "converters" for sorting that one out and installed it . . . but my turn and break lights barely lit at all! When I measured the voltage, they were only getting about 7.5 volts (motor not runnig), which was clearly not enough. So, instead of running the output from the converter directly to the lights I ran it to two relays instead and used these to switch the brake/turn lights. Worked great! Nice bright turn and brake lights now.
I hope this helps someone. I did a lot of head scratching to get this far!