Is this what I am looking for? It took a Dremel tool to get to it
That is the safety rollout limit switch. The connectors look ok on that one.
Like chopsaw was mentioning, if you dig around the junction boxes you usually find some screws that are holding the junction box in place. You may have to remove a little bit of foam but it shouldn't be too much.
The lower junction box will lead to the heating element. That is the next place to check. Those connectors may be completely covered and only disconnecting them from the element or tugging on them will let you know if they are falling apart.
I would bet money that when you disconnect them they will be so corroded and easily damaged that you MUST replace them. Have good spade connectors on hand and ready to go.
Let us know what you find there. :)