If I had a photo, I would most certainly use it. That is... unless the photo I have sucks. For now, you'll just have to picture a big heaping helping of
Slowly melt butter in a small pot and add the garlic, chili powder & juice from 3 of the limes - mix well - let sit on very low for the flavors to get better - btw this could easily be done well beforehand, just remelt it when ready to go
Brush the ears lightly with a little of the oil (and btw why the hell are they called ears??) then grill until soft, nicely browned in spots and beautiful - this can take up to 30 minutes.
Start basting about 5 minutes in, then baste often until finished cooking
When done remove to a platter, brush one last time, squeeze on some of the remaining lime and sprinkle lightly with the salt