I have 

                            |                  ER605 Router 1                      |            |                  ER605 Router 2                      |

192.168.1.0  <--->LAN: 192.168.1.1 |-__-|WAN: 192.168.2.1  <------>WAN: 192.168.2.2|-__-| LAN: 192.168.0.1<--->192.168.0.0/24

What routing rules do I need to get Devices on Network 1 to Communicate with Devices on Network 2? 

In my scenario; eventually will have two Radio Links connecting WAN and LAN/WAN1 for failover and load balancing.  But trying to get this to work with just UTP Ethernet