I would heat shrink it if possible, just something to keep the water out.
I feel bad for you waiting that long. My first set arrived after about 2 days, I had to return them (think the power supply died after trying to splice a 4' section to the end), got my refund, ordered another set, and they should be there when I get home.
2012 Jayco 32TSBH
2004 Ford Excursion
ProPride 3P / Tru Control brake controller
Roadmaster Active Suspension