Two Routers on Network, one works fine, other can see internet but not rest of networ

[Participant]

Do I need to change where the Cat5 cable connects into the Linksys router from the Internet port to one of the output ports

According to your op, you already had it set up like this:

Second Wireless Router Linksys connected by Cat5e cable to one of the outputs from the D-Link router.

Glad you got it working anyway.