Hi, I recently picked up a esab migmaster 250 and miller sga 100/spoolmate 3545 off craigslist for 200 bucks. Wish it was a miller welder but for price i couldn't pass it up. According to the owners son he had this hooked up welding aluminum with it at one time. It looks to be missing a wire that goes from the sga 100 control box to the welder, assuming the trigger wires? Also not real sure where to hook up the hot lead in the welder that comes out of the spool gun. Any help would be great, I can take some pics if needed. Thanks!