Tail lights assembly
76 Tradewind totally gutted. Went inside AS in middle of strong rain storm. Surprisingly only 1 leak where old ac is but both tail lights had leaks. When rain stopped drilled out entire assembly, 3 little things that looked like rivet heads. Assembly came off and is very heavy. Parts for it are not a problem. HOW DO YOU INSTALL ASSEMBLY back against the trailer. No perforations, no holes. Totally lost.
Assembly looks like cast "aluminum" or something like it