Hi mrekim,
You will be glad you fixed the wiring. While you are at it, for sure abandon the cross over wire inside the axle tube. That setup is the classic, wire insulation gets brittle, cracks, chaffs, skins the insulation and starts shorting out bouncing down the road. If you tie wrap new wires on the axle tube, tie then to the back of the tube. The front gets hit with "stuff". Camp ground branches, brush, anything you drive over that can fling up there.
The sad part of all this is, while what is shipped on day one does meet the minimum standard for working, sustaining working is the issue. It only takes a little more cost in better materials and time to take it from minimal to long lasting. Hopefully some day manufacture will either just fix the issue or at least offer an upgrade. I for one am willing to pay for quality.
Take care
John