You hooked the green +12v to the camera power cable?
The green should go to a 12v reverse switching source like your reverse lights.
Where is the power for the camera hooked to?

Ya but that sucks the fuse in mine was blown on first install it was a 1a fuse I now have 10a fuse and all is well.
You should maybe contact xcarlink and see what they suggest maybe they will cover the additional shipping cost or something under warranty.