I agree with SalMaglie. I figured I would try the #168 bulbs first. If they weren't bright enough then I would switch to the LED's. Well, forget the LED's! The #168 bulbs are plenty bright enough and that change will only cost about $5. I put in the #168 bulbs and backed my bike out onto the driveway in BRIGHT sun. There was no mistaking when the lamps were lit.
Thanks for the bulb idea! You Da MAn!