How to set nginx-ingress to rancher lb not, AWS ELB

Hi folks, I’m running Rancher 1.6 with a K8s environment using AWS as the cloud provider. I am attempting to set up an nginx-ingress using the helm chart. It always assigns the nginx-ingress-controller to a LoadBalancer backed by ELB. I’d like to just assign it to an external IP address of one of the hosts in my cluster, not ELB. Or alternatively, use the default rancher load balancer. I’d like some help understanding how to do this via the values.yml that comes with the chart. Thanks.