Unless you have a unit different than mine, there are two limit switches, one low, one high.
Per the electrical schematic I have for the winch wiring, I see NO reason why the wires cannot be replaced with the same gauge wiring.
On the back of the control switch there are six terminals.
From the switch terminals:
F to to the Upper limit switch
A wire from A is spliced into the other upper limit switch wire to the motor.
D to the lower limit switch
C wire from C is spliced into the other upper limit switch wire to the motor.
Really looks very simple....
This wiring schematic is in the Powerwinch Owner's manual that came with my trailer and I have a PDF copy. So, if you don't have one, and want one, PM me your email address and I'll email a copy to you.
BUT WHATEVER YOU DO....DO NOT BYPASS EITHER SWITCH. YOU CAN CAUSE SOME SERIOUS DAMAGE TO THE SYSTEM. NOT SURE WHAT, BUT HAVE BEEN TOLD THE UNIT SHOULD NEVER BE LIFTED HIGHER THAN THE INDICATOR WIRE (OUTSIDE FRONT CORNER) INDICATES BY BEING TAUGHT.