hi guys, a newbie here. ive been giving a sip 181 dp welder and looking at it,the front it has got - torch + but where it says torch there is no connection just a hole there.took side cover off to see if any dangling cables in there but nothing.do i need to use this part of machine,there wasnt a link cable either?.the earth clamp lead was put in the - hole and wondering if that was ok to start using like this.joe