WCF Service problem and windows service

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WCF

I'm new to this topic and can't seem to figure this out. So in my wcf service project I wrote what is intended to be a constantly running service that continually reads data from a database and processes it. Using the VS self host environment, it works great.

So now I want to host this in a windows service. Created the service and set references to my wcf service. Code looks like this:

private ServiceHost _host;
        private LabService ls = new LabService();


        public LabParserWindowsService()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {

            _host = new ServiceHost(typeof(LabParserService.LabService));
            _host.Open();
             ls.StartProcess();
           
        }

        protected override void OnStop()
        {
            _host.Close();
        }

Install the service and start it. Nothing happens. It starts ok but the wcf service isn't doing anything. The StartProcess() method in the wcfservice is what should kick things off but it never fires (I'm logging to db to see when it starts). Most examples I see do not have anything other than the _host.Open() part.

So how, from this windows service, do I actually start my wcf service running (invoke StartProcess)?

Thanks
Rut