Sealant including Dicor can look good, but unless you are on your hands and knees using a pick gently checking the sealant edge, you may miss the unsealed area. If it isn't sealed, the pick will slide under the edge. If there are marker lights or a rear camera in the back, you may need to seal them too. Do not use silicone. It does not stick as well as you think and nothing will stick after it has had silicone on it. Use blue painters tape to keep it neat where calking will be seen. Clear calk where the marker lights are.
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