Anyone work with LED lights

I have LED's on all exterior lights except the headlights and indicators on the fenders right now, and looking for decent replacements for the fender lights that don't require modding the light fixture.

Most of my interior lights are LED except for the aftermarket guages.

They sure do cut down the amperage needed to run double the brake and turn lights.
My 73 is a four lense in the bumper.
I changed my backup lights to brake and turn lights, so that all four lenses light with brakes. (Two on each side for signals, and one on each side for tail lights)
The original backups used the same lense type, but with a clear center so I used regular lenses and wired them into the existing brake and turns.

At an idle I can touch the brakes and it will light the driveway up all the way to the street at night, but the headlights don't even flicker when they come on.