Dimmer for LED marker light

[dadorfman]

Want to increase conspicuity but can't afford a new light bar. Can't remember the forum, but saw a picture of LED marker lights mounted on the top of an engine crash guard. Not only do I like the look, I can afford it. I have seen complaints about the brightness of LED marker lights. I can angle the lights down to keep them from blinding on-coming drivers. Does anybody also use dimmers with theirs? If so, what brand and where did you get them?

Thanks in advance.