[nass]

Focus man, Focus.,Jan 31 2006, 03:42 AM Wrote:What happens?  Do they just flash to fast?  I would have thought that they would have worked the same way as normal bulbs.  I can switch to a HD flasher, no problem.  Transport trucks use LED's and they don't have any special wiring.  I worked for a HD truck parts company for 2 years and thuy use a normal 2 pin flasher just like cars.  Only more robust to handle up to 20 circuts.
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you need and electronic one not a mechanical one. The problem is that LEDs draw far less current than ordinary bulbs. The car senses that and treats it as a burnt out bulb and lets you know this with a rapid flash. The resistor adds more load fooling the car into thinking that all is normal.