Why not use one of the Warn winch connectors to hook up your welder, run some cable to some place easy to access and mount the connector end. http://www.unlimitedtruck.com/warn-22681-winch-wire-harness-connector?fee=9&fep=4733
I just put Nitro gears in my Rubicon, they set up well and are quiet. Just finished a 3600 mile trip to colorado and utah, no problems.
These are my second set of Nitros, the other set is in my daughters jeep.