URGENT! Rockwood 2318G doesn't have any signal lights on

Hi Jim,

I should say the trailer light power module was replaced. it looks like a 4pin(ground, L/R turn and tail light) to 6pin (ground, L/R turn, tail, break and battery) converter. It's a sealed black plastic box and I can't check inside. Uhual technician replaced it and also cleaned up ground wire.

Here's the exact module that was replaced today.
http://www.uhaul.com/MovingSupplies/Wiring-lights/Tow-vehicle-wiring/Trailer-Light-Power-Module?id=13612