The screws hold the lens cap on. If it's still stuck on there you may have to pry it a little. After all, it's been on there for quite a few years presumably.
I think the screws to remove the bulb housing are inside. Either that or from up under the fender. Never had mine off yet.
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1971 GMC 2500, 402/TH400 4.10 Daily Driver
Lafayette, CO
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