Get a small screw driver and insert it behind the trim ring and lever the ring out of the rubber and the glass will come straight out. I did that to change the bulb and lost the glass and trim ring. So if you dont need the lenses or rings I would greatfully accept one cause I cant find anyone that will sell only the missing parts

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COB-66 Young at heart old fart.
Don't drive faster than your guardian angel can fly.
If it doesn't matter what gear your in you have enough torque.
VK3KDN