I own a 1992 Excella. Please review my post below and let me know if you have suggestions on how to or how you may have replaced the Center Brake Light on your Excella.
https://www.amazon.com/dp/B09F64DV5W...t_details&th=1
This is what I used I haven't actually installed it but it covers the hole lengthwise and the screws will fit between the rivets. Widthwise (tall) covers all but about a 1/16 gap well within caulking dimensions.
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