One other related question did you tag the black TT battery cable POSITIVE, or put red tape around the end and the white TT battery cable as NEGATIVE. It is amazing how many people can accidentally reverse them when they put the battery back in. Will cause a bunch of other problems.
The MAIN 30 amp fuse should be 10AWG (usually) wire, mine was GREEN (with a black fuse case), that was connected directly to the POSITIVE battery terminal. Does JAYCO use automatic circuit breakers on some of the new trailers. There may be 2 other wires connected directly to the battery also, if your TT has electric brakes it will have a "Break-away" switch wired directly to the battery. Sometimes the dealer will wire the Tongue jack, fused 12VDC lead directly to the battery also.
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
Our Solar Album http://www.jaycoowners.com/album.php?albumid=329