CONGRATULATIONS on the JAYCO!!!
...and WELCOME TO JOF!!! The members here are GREAT!!! There is a lot of GREAT information to be found here. I am sure that you will have information and pictures to share with us... so please do!!
Not sure about the connectors on your TT as there were different ones used. Are you planning on mounting your SOLAR panels or using them as portables?
Renogy (Google it) SOLAR panels are a favorite. They have kits to meet your individual needs. They are probably the best $ per watt cost you will find and I have yet to hear anyone having any issues with the ones they purchased.
As for the pre-wire, no matter what type of connector it is (picture of it would be GREAT) there are converters and the PRE-WIRE needs to be continuity checked from the connector down to the other end, before connecting anything to it.
Check out our RVing with SOLAR social group, the link is below
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RVing with SOLAR