K3s cluster with an existing wildcard cert


I have an existing wildcard cert that will not expire in a while and I wanted to use it for a k3s cluster install.
I’ve installed k3s before on 4 nodes and am wondering if there’s a way to incorporate my existing wildcard cert for api as well as traefik/ingress.
Is there a step during installation for something like this or a sequence of steps after the installation?