I'm not in the same city as my LC, but when I replaced my park light bulbs on the kaymar I don't believe they were standard 1156 because it was like a 10watt bulb.
There were actually 2 bulbs that I was torn between at Walmart (Both Sylvania), I went with the higher wattage. I think this is the type of bulb I got, I know it looks like it:
Stopped by Checkers this afternoon, found a Sylvania replacement for Trifia bulbs. They were at the bottom of the Light bulb rack and were labeled "European Lamps". I think the lights in the Kaymar bumper are Hella's, but not certain. Below are the replacement part numbers.
Trifa 12V P21W 2FZ C3 ---> Sylvania 7506 (P21W) (bigger bulb, 2 in ea. light)
Trifa 12V R10W 2FY E3 ---> Sylvania 5008 (R10W) (smaller bulb, 1 in each light)
Yes, the Kaymar bulbs appear to burn out rather quickly. I've replaced 4 in the 2 years I've had it on. Just go to the local autoparts store: Autozone, Kragen, take your pick and look for either a turn signal bulb or similar looking size and it should work just fine. I just made sure it was a 12volt application. The new ones haven't burned out as quickly either.
well, upon inspection, the bumper I now have which is a few years old has light reflectors saying to use 21W bulbs and the bulbs in there indeed were 21W, but it was also clear that it had gotten too hot at some point and some of the plastic mounts inside the light had become brittle from the heat and were easy to break. So I fixed that easily enough with longer screws but I also replaced the bulbs for the tail lights with less powerful ones (about 13W). I think that's safer and will not as likely to damage the plastic. They are still plenty bright. In fact brighter than the bulbs in the cruiser tail lights, strangely enough. The 21W were way brighter.
IOW, might be good to watch your lights if you're running the 21W bulbs.
(The above is of course assuming that the extra heat effects observed is not because some PO did run bulbs more powerful than 21W at some time.)