I am curious if anyone has swithed there incandescent side marker bulbs to a LED and what were the results? Thanks everybody.
I have done that. They work well if you pay attention to light direction and lens color.
Since LEDs are so directional (unlike a regular bulb) you need to make sure the LED is pointed in the direction you want the light to go. Also, make sure you order an LED that is the same color as the lens you are putting it in. If you are replacing a bulb behind an amber lens, order an amber LED, etc.
Lastly, your flasher will speed up, so you will need to get a constant-rate (or electronic) flasher. They are usually available at any auto parts store.